Freda Posted May 23, 2020 Share Posted May 23, 2020 I'm not a vet, or an epidemiologist, so I'm hoping someone can provide advice here. The mare in question, imported from France early last year, had ( as I understand from the release from Cambridge Stud ) provided three negative tests prior to importation. Now, a year later, shows two positive tests. The inference has to be, following on, that she became infected here. Is there any other possible scenario? Quote Link to comment Share on other sites More sharing options...
Chief Stipe Posted May 23, 2020 Share Posted May 23, 2020 1 minute ago, Freda said: The inference has to be, following on, that she became infected here. Is there any other possible scenario? The vector for transmission is a Tick. Supposedly we don't have them in NZ. So the most likely reason is that the first test results were false negatives before it arrived OR the latest tests are false positives. 1 Quote Link to comment Share on other sites More sharing options...
curious Posted May 23, 2020 Share Posted May 23, 2020 (edited) 12 minutes ago, Chief Stipe said: The vector for transmission is a Tick. Supposedly we don't have them in NZ. So the most likely reason is that the first test results were false negatives before it arrived OR the latest tests are false positives. Or ... that NZ has a piroplasmosis vector which has never been tested before, though that would mean that the disease was already here unbeknown to anyone. I note that there can be non-equine hosts including dogs. Edited May 23, 2020 by curious 1 Quote Link to comment Share on other sites More sharing options...
Chief Stipe Posted May 23, 2020 Share Posted May 23, 2020 10 minutes ago, curious said: Or ... that NZ has a piroplasmosis vector which has never been tested before, though that would mean that the disease was already here unbeknown to anyone. I note that there can be non-equine hosts including dogs. Well I bet MPI don't take the Mycoplasma cull the herd approach of that's the case. 1 Quote Link to comment Share on other sites More sharing options...
curious Posted May 23, 2020 Share Posted May 23, 2020 18 minutes ago, Chief Stipe said: Well I bet MPI don't take the Mycoplasma cull the herd approach of that's the case. No. But it seems a fairly extensive investigation will be necessary to rule out both the above possibilities. Quote Link to comment Share on other sites More sharing options...
Chief Stipe Posted May 23, 2020 Share Posted May 23, 2020 20 minutes ago, curious said: No. But it seems a fairly extensive investigation will be necessary to rule out both the above possibilities. But the only way it could be transferred between a horse and a dog is by the Tick vector or dirty needles. You would have expected the mare to be displaying some signs of infection. I'd say a false positive. Aren't imported mares from Europe kept in quarantine for a period of time? Quote Link to comment Share on other sites More sharing options...
curious Posted May 23, 2020 Share Posted May 23, 2020 11 minutes ago, Chief Stipe said: But the only way it could be transferred between a horse and a dog is by the Tick vector or dirty needles. You would have expected the mare to be displaying some signs of infection. I'd say a false positive. Aren't imported mares from Europe kept in quarantine for a period of time? 2 false positives? Don't think there's any quarantine on arrival. Never used to be. And this is a year aafter import as I understand it so, 3 false negatives prior to import now 2 false positives a year later? Seems a bit of a stretch to me. Quote Link to comment Share on other sites More sharing options...
Freda Posted May 23, 2020 Author Share Posted May 23, 2020 46 minutes ago, curious said: No. But it seems a fairly extensive investigation will be necessary to rule out both the above possibilities. Yes...and given that MPI don't seem to be overly pro-active in many cases, this may be quite an on-going saga. Quote Link to comment Share on other sites More sharing options...
All The Aces Posted May 23, 2020 Share Posted May 23, 2020 1 hour ago, curious said: 2 false positives? Don't think there's any quarantine on arrival. Never used to be. And this is a year aafter import as I understand it so, 3 false negatives prior to import now 2 false positives a year later? Seems a bit of a stretch to me. The mare would have been quarantined and tested for piro upon arrival in NZ. Quote Link to comment Share on other sites More sharing options...
curious Posted May 23, 2020 Share Posted May 23, 2020 1 hour ago, All The Aces said: The mare would have been quarantined and tested for piro upon arrival in NZ. Ok. Thanks. That's even worse then. Quote Link to comment Share on other sites More sharing options...
curious Posted May 23, 2020 Share Posted May 23, 2020 (edited) 1 hour ago, All The Aces said: The mare would have been quarantined and tested for piro upon arrival in NZ. Where did she come from? Just looking at the MPI regs, if she were quarantined on arrival it would only be if she came from a country where the below are present. I also don't see any requirement to test for piro during that quarantine? Or post-arrival? (3)When equids are to be imported into New Zealand from countries where the diseases listed below are considered present,the duration and type of PAQ is stated in brackets: a)Equine infectious anaemia (EIA) if considered by MPI as moderately to highly prevalent in the country of export (minimum 7 day PAQ) b)Equine influenza (minimum 14 day PAQ) c)Venezuelan equine encephalomyelitis (minimum 7 day PAQ) d)Surra (minimum 30 day PAQ protected from insect vectors) https://www.mpi.govt.nz/dmsdocument/36951-equids-import-health-standard Edited May 23, 2020 by curious Quote Link to comment Share on other sites More sharing options...
All The Aces Posted May 23, 2020 Share Posted May 23, 2020 All horses coming into NZ have to be quarantined except those arriving from Australia. Even if she had come in from Australia she would have been quarantined there after arriving from France. Horses travelling between NZ and Australia all have blood tests prior to travelling too. Quote Link to comment Share on other sites More sharing options...
All The Aces Posted May 23, 2020 Share Posted May 23, 2020 https://www.mpi.govt.nz/dmsdocument/1706/direct Quote Link to comment Share on other sites More sharing options...
curious Posted May 24, 2020 Share Posted May 24, 2020 (edited) 16 minutes ago, All The Aces said: https://www.mpi.govt.nz/dmsdocument/1706/direct Gotit. Ta. Seems like we have a serious problem Houston. Edited May 24, 2020 by curious Quote Link to comment Share on other sites More sharing options...
Chief Stipe Posted May 24, 2020 Share Posted May 24, 2020 14 minutes ago, curious said: Gotit. Ta. Seems like we have a serious problem Houston. What species of Piroplasmid were they infected with? Forget that question - found it in the original article - Theileria equi Quote Link to comment Share on other sites More sharing options...
curious Posted May 24, 2020 Share Posted May 24, 2020 21 minutes ago, Chief Stipe said: What species of Piroplasmid were they infected with? Forget that question - found it in the original article - Theileria equi Who do you mean by 'they'? Quote Link to comment Share on other sites More sharing options...
Chief Stipe Posted May 24, 2020 Share Posted May 24, 2020 2 minutes ago, curious said: Who do you mean by 'they'? I meant "it". Quote Link to comment Share on other sites More sharing options...
Chief Stipe Posted May 24, 2020 Share Posted May 24, 2020 1 hour ago, curious said: Gotit. Ta. Seems like we have a serious problem Houston. Not necessarily. Depends on what tests were done there and here. The negatives in France could have been valid because it is hard to detect in early infection. False positives do happen. However two positive tests would indicate it has the protozoan. Interestingly the bovine species of Theileria sp. is widely present in New Zealand dairy cattle but doesn't infect horses. Didn't realise we had cattle ticks in New Zealand!!!! Here's the kicker though......the cattle tick MAY be able to act as vector for T. equi. Quote Link to comment Share on other sites More sharing options...
Freda Posted May 24, 2020 Author Share Posted May 24, 2020 3 minutes ago, Chief Stipe said: Not necessarily. Depends on what tests were done there and here. The negatives in France could have been valid because it is hard to detect in early infection. False positives do happen. However two positive tests would indicate it has the protozoan. Interestingly the bovine species of Theileria sp. is widely present in New Zealand dairy cattle but doesn't infect horses. Didn't realise we had cattle ticks in New Zealand!!!! Can't say I gave cattle much thought...but given the close proximity of both species on many properties it isn't too big a stretch to consider that transmission may occur, even if previously thought impossible. Evolution is ongoing, it hasn't stopped just because we think we're at the top if the heap . Certainly horse ticks have been here for ages. Quote Link to comment Share on other sites More sharing options...
curious Posted May 24, 2020 Share Posted May 24, 2020 36 minutes ago, Freda said: Can't say I gave cattle much thought...but given the close proximity of both species on many properties it isn't too big a stretch to consider that transmission may occur, They can even transmit cobalt from sharing water troughs between species. Quote Link to comment Share on other sites More sharing options...
Freda Posted May 24, 2020 Author Share Posted May 24, 2020 6 minutes ago, curious said: They can even transmit cobalt from sharing water troughs between species. Oh, yeah...! So they can...but an evolving situation makes more sense to me! Quote Link to comment Share on other sites More sharing options...
All The Aces Posted May 27, 2020 Share Posted May 27, 2020 I reckon out bound flights will resume late this week or early next week. Quote Link to comment Share on other sites More sharing options...
Dark Beau Posted May 27, 2020 Share Posted May 27, 2020 On 24/05/2020 at 8:58 AM, curious said: 2 false positives? Don't think there's any quarantine on arrival. Never used to be. And this is a year aafter import as I understand it so, 3 false negatives prior to import now 2 false positives a year later? Seems a bit of a stretch to me. A bit like the Virgin Mary’s miraculous birth of Jesus Christ! It just happened! Quote Link to comment Share on other sites More sharing options...
All The Aces Posted May 28, 2020 Share Posted May 28, 2020 23 hours ago, All The Aces said: I reckon out bound flights will resume late this week or early next week. Starting this Sunday. 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.