les TESTS RASSURANTS SONT INQUIETANTS
The tests were reassuring
The good news is that almost all of the tests carried out by Britain's Department for Environment, Food and Rural Affairs (Defra) are negative for any kind of influenza in wild birds. The bad news is that they shouldn't be.
Various forms of influenza are a disease of birds and commonly found in 6% to 7% of samples, according to New Scientist (via TimesOnline). But Defra's testing found only two cases in 3343 samples in December -- .06%.
“There’s something wrong with these numbers,” Björn Olsen, of the University of Kalmar, in Sweden, told New Scientist.
The collection method may be the key. A sterile swab is used to take a faecal sample and stored in a refrigerator. Scientists say that the swabs should be immersed in a saline solution and then frozen. “If you left a swab in the refrigerator like that it would dry out and you’d lose all your virus,” Dr Olsen said. (TimesOnline)
tests effectués par le DEFRA en UK sont negatifs pour toute sorte d'influenza chez les oiseaux sauvages. Cela ne devrait pas etre : normalement on a 6 à 7 % d'oiseaux atteints ( par diff formes de virus aviaires)
les test de la DEFRA : 2 positifs sur 3343 , soit 0.06 : IMPOSSIBLE
il y a peut etre eu erreur de prelevemnt : on doit faire un prelevemnt sterile des selles , mettre au refrigerateur : MAIS le prelevemnt doit etre immergé auparavant dans une solution saline
si cette immersion n'est pas faite, le prvt seche et on perd les virus
conclusion : se mefier des trop bons resultats