We had evolution over time, and this unbelievable mortality rate in human beings: 55 percent of people who have become infected with H5N1 have, in fact, succumbed.
Nós evoluímos com o passar do tempo, e temos esta inacreditável taxa de mortalidade entre os seres humanos. 55% das pessoas que foram infectadas com o H5N1, de fato, sucumbiram.