Over the last twenty years, there have been reports of thirty new infectious diseases, or variations on old diseases caused by mutating viruses, or even the re-emergence of old diseases such as tuberculosis, to give but one example.
Ces vingt dernières années, on a signalé trente nouvelles maladies infectieuses, des variantes d’anciennes maladies provenant de mutations de virus et même la résurgence d’anciennes maladies telles que la tuberculose, pour ne donner qu’un exemple.
