• Welcome to the Chronicle Forums.
    Please complete your profile. The forums and the rest of www.chronofhorse.com has single sign-in, so your log in information for one will automatically work for the other. Disclaimer: The opinions expressed here are the views of the individual and do not necessarily reflect the views and opinions of The Chronicle of the Horse.

Announcement

Collapse
1 of 2 < >

Event Announcements now available FREE to all registered users

We just reconfigured the Event Announcements forum to be available as a free service for all registered forum users. See the thread stuck at the top of that forum for more information.
2 of 2 < >

Forum rules and no-advertising policy

As a participant on this forum, it is your responsibility to know and follow our rules. Please read this message in its entirety.

Board Rules

1. You’re responsible for what you say.
As outlined in Section 230 of the Communications Decency Act, The Chronicle of the Horse and its affiliates, as well Jelsoft Enterprises Ltd., the developers of vBulletin, are not legally responsible for statements made in the forums.

This is a public forum viewed by a wide spectrum of people, so please be mindful of what you say and who might be reading it—details of personal disputes are likely better handled privately. While posters are legally responsible for their statements, the moderators may in their discretion remove or edit posts that violate these rules. Users have the ability to modify or delete their own messages after posting, but administrators generally will not delete posts, threads or accounts upon request.

Outright inflammatory, vulgar, harassing, malicious or otherwise inappropriate statements and criminal charges unsubstantiated by a reputable news source or legal documentation will not be tolerated and will be dealt with at the discretion of the moderators.

2. Conversations in horse-related forums should be horse-related.
The forums are a wonderful source of information and support for members of the horse community. While it’s understandably tempting to share information or search for input on other topics upon which members might have a similar level of knowledge, members must maintain the focus on horses.

3. Keep conversations productive, on topic and civil.
Discussion and disagreement are inevitable and encouraged; personal insults, diatribes and sniping comments are unproductive and unacceptable. Whether a subject is light-hearted or serious, keep posts focused on the current topic and of general interest to other participants of that thread. Utilize the private message feature or personal email where appropriate to address side topics or personal issues not related to the topic at large.

4. No advertising in the discussion forums.
Posts in the discussion forums directly or indirectly advertising horses, jobs, items or services for sale or wanted will be removed at the discretion of the moderators. Use of the private messaging feature or email addresses obtained through users’ profiles for unsolicited advertising is not permitted.

Company representatives may participate in discussions and answer questions about their products or services, or suggest their products on recent threads if they fulfill the criteria of a query. False "testimonials" provided by company affiliates posing as general consumers are not appropriate, and self-promotion of sales, ad campaigns, etc. through the discussion forums is not allowed.

Paid advertising is available on our classifieds site and through the purchase of banner ads. The tightly monitored Giveaways forum permits free listings of genuinely free horses and items available or wanted (on a limited basis). Items offered for trade are not allowed.

Advertising Policy Specifics
When in doubt of whether something you want to post constitutes advertising, please contact a moderator privately in advance for further clarification. Refer to the following points for general guidelines:

Horses – Only general discussion about the buying, leasing, selling and pricing of horses is permitted. If the post contains, or links to, the type of specific information typically found in a sales or wanted ad, and it’s related to a horse for sale, regardless of who’s selling it, it doesn’t belong in the discussion forums.

Stallions – Board members may ask for suggestions on breeding stallion recommendations. Stallion owners may reply to such queries by suggesting their own stallions, only if their horse fits the specific criteria of the original poster. Excessive promotion of a stallion by its owner or related parties is not permitted and will be addressed at the discretion of the moderators.

Services – Members may use the forums to ask for general recommendations of trainers, barns, shippers, farriers, etc., and other members may answer those requests by suggesting themselves or their company, if their services fulfill the specific criteria of the original post. Members may not solicit other members for business if it is not in response to a direct, genuine query.

Products – While members may ask for general opinions and suggestions on equipment, trailers, trucks, etc., they may not list the specific attributes for which they are in the market, as such posts serve as wanted ads.

Event Announcements – Members may post one notification of an upcoming event that may be of interest to fellow members, if the original poster does not benefit financially from the event. Such threads may not be “bumped” excessively. Premium members may post their own notices in the Event Announcements forum.

Charities/Rescues – Announcements for charitable or fundraising events can only be made for 501(c)(3) tax-exempt organizations. Special exceptions may be made, at the moderators’ discretion and direction, for board-related events or fundraising activities in extraordinary circumstances.

Occasional posts regarding horses available for adoption through IRS-registered horse rescue or placement programs are permitted in the appropriate forums, but these threads may be limited at the discretion of the moderators. Individuals may not advertise or make announcements for horses in need of rescue, placement or adoption unless the horse is available through a recognized rescue or placement agency or government-run entity or the thread fits the criteria for and is located in the Giveaways forum.

5. Do not post copyrighted photographs unless you have purchased that photo and have permission to do so.

6. Respect other members.
As members are often passionate about their beliefs and intentions can easily be misinterpreted in this type of environment, try to explore or resolve the inevitable disagreements that arise in the course of threads calmly and rationally.

If you see a post that you feel violates the rules of the board, please click the “alert” button (exclamation point inside of a triangle) in the bottom left corner of the post, which will alert ONLY the moderators to the post in question. They will then take whatever action, or no action, as deemed appropriate for the situation at their discretion. Do not air grievances regarding other posters or the moderators in the discussion forums.

Please be advised that adding another user to your “Ignore” list via your User Control Panel can be a useful tactic, which blocks posts and private messages by members whose commentary you’d rather avoid reading.

7. We have the right to reproduce statements made in the forums.
The Chronicle of the Horse may copy, quote, link to or otherwise reproduce posts, or portions of posts, in print or online for advertising or editorial purposes, if attributed to their original authors, and by posting in this forum, you hereby grant to The Chronicle of the Horse a perpetual, non-exclusive license under copyright and other rights, to do so.

8. We reserve the right to enforce and amend the rules.
The moderators may delete, edit, move or close any post or thread at any time, or refrain from doing any of the foregoing, in their discretion, and may suspend or revoke a user’s membership privileges at any time to maintain adherence to the rules and the general spirit of the forum. These rules may be amended at any time to address the current needs of the board.

Please see our full Terms of Service and Privacy Policy for more information.

Thanks for being a part of the COTH forums!

(Revised 1/26/16)
See more
See less

Question About EVA Vaccine, Again !

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Question About EVA Vaccine, Again !

    Two mares, A and B. In spring 2012 both were vaccinated. Mare B got pregnant and should foal mid May. Mare A did not get pregnant. Mare A and B share a paddock and shed. I plan on breeding mare A this spring. Can I give her an EVA booster and leave her in the same paddock/shed with mare B ?

    Mare C is a maiden and lives with a younger filly and a gelding in a paddock/shed adjacent to where mare A and B live, separated by an eight foot
    aisle. I plan on breeding mare C this spring. Can I vaccinate her and leave her where she is ?
    None of the stallions these mares are being bred to are EVA positive, as far as I know.
    Thanks !
    http://sporthorsesnw.com/
    https://www.facebook.com/pages/Sport...01526589966216

  • #2
    Originally posted by Elfe View Post
    Two mares, A and B. In spring 2012 both were vaccinated. Mare B got pregnant and should foal mid May. Mare A did not get pregnant. Mare A and B share a paddock and shed. I plan on breeding mare A this spring. Can I give her an EVA booster and leave her in the same paddock/shed with mare B ?
    Yes. You can leave her in there if you are simply boosting the vaccination. If you plan on breeding her, you must (or you "should") move her out of that pen during the time you inseminate if you are breeding to an EVA positive stallion

    Mare C is a maiden and lives with a younger filly and a gelding in a paddock/shed adjacent to where mare A and B live, separated by an eight foot
    aisle. I plan on breeding mare C this spring. Can I vaccinate her and leave her where she is ?
    Yes, but why not vaccinate the younger filly at the same time? It would be relatively easy and since you are doing both and they are in with a gelding, now would be the time when "I" would do it. It also makes future boostering easier.

    Good luck!
    Equine-Reproduction.com Now offering one on one customized training!
    Leg-Up Equestrian Assistance Program, Inc. A 501(c)(3) non-profit charity

    Comment

    • Original Poster

      #3
      Originally posted by Equine Reproduction View Post
      Yes. You can leave her in there if you are simply boosting the vaccination. If you plan on breeding her, you must (or you "should") move her out of that pen during the time you inseminate if you are breeding to an EVA positive stallion



      Yes, but why not vaccinate the younger filly at the same time? It would be relatively easy and since you are doing both and they are in with a gelding, now would be the time when "I" would do it. It also makes future boostering easier.

      Good luck!
      Thanks !
      Explain, please, why I should vaccinate the younger filly. I am not planning on breeding her anytime soon, is there another reason ?
      Thanks again !
      http://sporthorsesnw.com/
      https://www.facebook.com/pages/Sport...01526589966216

      Comment


      • #4
        Originally posted by Elfe View Post
        Thanks !
        Explain, please, why I should vaccinate the younger filly. I am not planning on breeding her anytime soon, is there another reason ?
        Thanks again !
        Because you would have to isolate her away from the others for the initial vaccination. On boosters, they don't need to be isolated. So, it would be easier to do it now and then not have to worry about keeping her away from others later when you vaccinate.
        Equine-Reproduction.com Now offering one on one customized training!
        Leg-Up Equestrian Assistance Program, Inc. A 501(c)(3) non-profit charity

        Comment

        • Original Poster

          #5
          Originally posted by Equine Reproduction View Post
          Because you would have to isolate her away from the others for the initial vaccination. On boosters, they don't need to be isolated. So, it would be easier to do it now and then not have to worry about keeping her away from others later when you vaccinate.
          That makes sense, thank you !
          Would I have to boost every year or only the year she gets bred ?
          Also, is it necessary to draw blood before vaccinating to show the mare is negative ? Is that ever an issue, for instance in the case of export ?
          http://sporthorsesnw.com/
          https://www.facebook.com/pages/Sport...01526589966216

          Comment


          • #6
            Well, if you have her close to mares you are breeding or in the same pasture with mares you are breeding, then you should do annual boosters to all your girls, young and old, prior to any breeding taking place. Annual vaccination boosters are done, (and this applies to any vaccine), because the immune system needs constant reminding so-to-speak.

            Once you have vaccinated, pulling blood will show antibodies, meaning she has successfully developed antibodies to the disease the vaccine was protecting her against. If you're exporting, you would show the vaccinations records of the horse.

            As Kathy mentioned - the very first vaccination you have to isolate her - separate paddock (no ability for nose touching over the fence!), separate water source - especially away from your pregnant mares as this vaccine is a modified live virus. Pregnant mares should never be exposed to any live vaccine and kept away from horses exposed to any live virus vaccines. But once you get to the annual booster stage, nobody has to be isolated.

            Kathy is so modest, but there is an EXCELLENT article on Kathy and Jos' website
            that I've linked to here.
            http://www.equine-reproduction.com/articles/EVA.shtml
            Practice! Patience! Persistence!
            http://www.mariposasporthorses.com/
            https://www.facebook.com/MariposaSportHorses/

            Comment

            • Original Poster

              #7
              Originally posted by rodawn View Post



              As Kathy mentioned - the very first vaccination you have to isolate her - separate paddock (no ability for nose touching over the fence!), separate water source - especially away from your pregnant mares as this vaccine is a modified live virus. Pregnant mares should never be exposed to any live vaccine and kept away from horses exposed to any live virus vaccines. But once you get to the annual booster stage, nobody has to be isolated.


              http://www.equine-reproduction.com/articles/EVA.shtml
              This is the part I really don't understand: since the pregnant mares have been vaccinated and therefore have immunity, why would you have to isolate them from recently vaccinated other horses ?
              IOW's if the vaccine is effective they have immunity, if the vaccine is not effective then why bother ?
              What am I missing ?
              Thanks !
              http://sporthorsesnw.com/
              https://www.facebook.com/pages/Sport...01526589966216

              Comment


              • #8
                The article explains most of it.

                Originally posted by rodawn View Post
                As Kathy mentioned - the very first vaccination you have to isolate her - separate paddock (no ability for nose touching over the fence!), separate water source - especially away from your pregnant mares as this vaccine is a modified live virus. Pregnant mares should never be exposed to any live vaccine and kept away from horses exposed to any live virus vaccines. But once you get to the annual booster stage, nobody has to be isolated.
                The sentence following my bolded part, my apologies. I MUST clarify. It should read: In a general non-pregnant herd, once you do annual boosters, nobody needs to be isolated. In the regular nonpregnant herd that you are choosing to vaccinate for the very first time, they can all be done in one herd.

                However, you should still remove your pregnant mares from those who are being vaccinated - for the protection of the unborn foals. To not do so is to risk her aborting the foal.

                Originally posted by Elfe View Post
                This is the part I really don't understand: since the pregnant mares have been vaccinated and therefore have immunity, why would you have to isolate them from recently vaccinated other horses ?
                IOW's if the vaccine is effective they have immunity, if the vaccine is not effective then why bother ?
                What am I missing ?
                Thanks !
                It's not the mare. It's her unborn foal you need to protect.

                Pregnant mares and thus their unborn fetuses should never be exposed to a live vaccine, any live virus vaccine, let alone the EVA live vaccine, or exposed to a horse who has been given a live virus vaccine. Even if it's a booster, remove the preggos from the herd you are boostering.

                This is not the same as a KILLED VIRUS vaccine which are safer for the unborn fetus. We give various vaccinations to pregnant mares that are all killed virus. Pneumabort-K or Prodigy being one of them.

                The EVA vaccine is a modified live virus, and this virus is lethal to unborn foals and will result in abortion within 30 days of exposure. It is also not safe for newborn foals to be exposed (direct nose to nose contact with its mother or herd companion), so if you are planning to vaccinate a mare who has a foal at side, ask your vet about when is a safe age of the foal to be at so you can vaccinate the mare.
                Practice! Patience! Persistence!
                http://www.mariposasporthorses.com/
                https://www.facebook.com/MariposaSportHorses/

                Comment

                • Original Poster

                  #9
                  Originally posted by rodawn View Post
                  The article explains most of it.



                  The sentence following my bolded part, my apologies. I MUST clarify. It should read: In a general non-pregnant herd, once you do annual boosters, nobody needs to be isolated. In the regular nonpregnant herd that you are choosing to vaccinate for the very first time, they can all be done in one herd.

                  However, you should still remove your pregnant mares from those who are being vaccinated - for the protection of the unborn foals. To not do so is to risk her aborting the foal.



                  It's not the mare. It's her unborn foal you need to protect.

                  Pregnant mares and thus their unborn fetuses should never be exposed to a live vaccine, any live virus vaccine, let alone the EVA live vaccine, or exposed to a horse who has been given a live virus vaccine. Even if it's a booster, remove the preggos from the herd you are boostering.

                  This is not the same as a KILLED VIRUS vaccine which are safer for the unborn fetus. We give various vaccinations to pregnant mares that are all killed virus. Pneumabort-K or Prodigy being one of them.

                  The EVA vaccine is a modified live virus, and this virus is lethal to unborn foals and will result in abortion within 30 days of exposure. It is also not safe for newborn foals to be exposed (direct nose to nose contact with its mother or herd companion), so if you are planning to vaccinate a mare who has a foal at side, ask your vet about when is a safe age of the foal to be at so you can vaccinate the mare.
                  O.K. So what you are saying is that the vaccine does not protect the mare from aborting if exposed to the virus ?
                  That is the main reason for me to vaccinate in the first place !
                  Thanks for the clarification.
                  http://sporthorsesnw.com/
                  https://www.facebook.com/pages/Sport...01526589966216

                  Comment


                  • #10
                    Originally posted by rodawn View Post
                    The EVA vaccine is a modified live virus, and this virus is lethal to unborn foals and will result in abortion within 30 days of exposure.
                    This is incorrect.

                    In fact, in the face of an outbreak of EVA and the risk of pregnant mares being exposed to the virus, vaccination is recommended. It is correct to say that routine vaccination of pregnant mares with Arvac (the MLV EAV vaccine) is not recommended, but research has indicated that it's use does not cause abortion at all stages of pregnancy:

                    Broaddus CC, Balasuriya UB, White JL, Timoney PJ, Funk RA, Holyoak GR. (2011) Evaluation of the safety of vaccinating mares against equine viral arteritis during mid or late gestation or during the immediate postpartum period: J Am Vet Med Assoc. 2011 Mar 15;238(6):741-50
                    Last edited by Jos; Feb. 13, 2013, 02:11 PM. Reason: Clarification
                    Jos Mottershead
                    Equine-Reproduction.com LLC
                    EquineRepro Informational Group

                    Comment


                    • #11
                      Hi Jos,
                      What you say contradicts several of our local vets then? They don't want pregnant mares vaccinated with the live vaccine, or for that matter, any live virus vaccine.

                      Can you clarify why this modified live vaccine is okay to give pregnant mares, when the vets here, including repro vets, really shy away from it?

                      I suppose if push comes to shove and there is some wild outbreak, then the vaccine is the lesser of the two evils, but that would only be in the case of an outbreak, at least according to these vets.
                      Practice! Patience! Persistence!
                      http://www.mariposasporthorses.com/
                      https://www.facebook.com/MariposaSportHorses/

                      Comment


                      • #12
                        Originally posted by rodawn View Post
                        Can you clarify why this modified live vaccine is okay to give pregnant mares, when the vets here, including repro vets, really shy away from it?
                        Unfortunately not. All I can offer is the peer-reviewed research and the personal knowledge of individuals that have used the vaccine in pregnant mares without negative effect. Perhaps ask your veterinarians for their research sources and compare the two and go from there! I do have tremendous confidence in Dr. Peter Timoney however, who is the acknowledged world-expert on EVA, and co-author Dr. Holyoak runs a close second!
                        Jos Mottershead
                        Equine-Reproduction.com LLC
                        EquineRepro Informational Group

                        Comment


                        • #13
                          Thank you, Jos!
                          Practice! Patience! Persistence!
                          http://www.mariposasporthorses.com/
                          https://www.facebook.com/MariposaSportHorses/

                          Comment

                          • Original Poster

                            #14
                            Jos:
                            Please clarify:
                            1. Does vaccine protect pregnant mares from aborting if exposed to virus, be it in the respiratory or semen form ?
                            2. If yes, then no need to isolate vaccinated mares from first time vaccinated horses?
                            3. If mare has been vaccinated, then newborn should have acquired immunity through colostrum and there should be no problem boosting/vaccinating mare a few days after foaling ?

                            Thank you !
                            http://sporthorsesnw.com/
                            https://www.facebook.com/pages/Sport...01526589966216

                            Comment


                            • #15
                              Originally posted by Elfe View Post
                              Jos:
                              Please clarify:
                              1. Does vaccine protect pregnant mares from aborting if exposed to virus, be it in the respiratory or semen form ?
                              2. If yes, then no need to isolate vaccinated mares from first time vaccinated horses?
                              3. If mare has been vaccinated, then newborn should have acquired immunity through colostrum and there should be no problem boosting/vaccinating mare a few days after foaling ?

                              Thank you !
                              Here is Dr. Timoney's faculty page at Gluck:
                              http://www.ca.uky.edu/gluck/TimoneyPJ.asp

                              I have found him to be incredibly gracious and helpful when I've emailed him with questions regarding EVA.
                              "No matter how cynical I get its just not enough to keep up." Lily Tomlin

                              Comment


                              • #16
                                The answers to some of these questions are actually contained within the abstract to which I linked.

                                Originally posted by Elfe View Post
                                1. Does vaccine protect pregnant mares from aborting if exposed to virus, be it in the respiratory or semen form?
                                The virus is the virus. It's not a different form for the reproductive version of the disease vs. the respiratory. Hence a mare that is protected by vaccination is protected regardless of source of exposure.

                                2. If yes, then no need to isolate vaccinated mares from first time vaccinated horses?
                                The reason one isolates following vaccination is to avoid unidentified seroconversion of non-vaccinated horses should they come into contact with the newly vaccinated animal. If seroconversion occurred, it could produce an inexplicably seropositive animal if that contact animal were subsequently tested. Consequently as there is no concern of seroconversion of an already-vaccinated (and therefore seroconverted) horse, there is no need to isolate vaccinated animals.

                                3. If mare has been vaccinated, then newborn should have acquired immunity through colostrum and there should be no problem boosting/vaccinating mare a few days after foaling ?
                                This is largely explained in the linked abstract: All postparturient vaccinates were seronegative at foaling; all of them seroconverted after vaccination. No adverse effects were detected in any of their foals.

                                People that have questions about EVA, please review the articles on our site that cover pretty much all of the basic questions and a few of the more advanced ones! There are several different articles on EVA to be found in the articles section.
                                Jos Mottershead
                                Equine-Reproduction.com LLC
                                EquineRepro Informational Group

                                Comment

                                • Original Poster

                                  #17
                                  Thanks !
                                  http://sporthorsesnw.com/
                                  https://www.facebook.com/pages/Sport...01526589966216

                                  Comment

                                  Working...
                                  X