Gripe aviar
Avian influenza
Prensa méd. argent; 92 (10), 2005
This report describes the current status of avian infuenza. Three major classes of influenza viruses are recognized: A,B and C. Influenza C is a relatively minor cause of respiratory illness, but influenza A (mainly) and B strains (less severe) are major cases of morbidity and mortality. Each tends to oc...