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.
De afgelopen twintig jaar zijn we geconfronteerd met dertig nieuwe besmettelijke ziekten, mutaties van bestaande ziekten of oude ziekten die opnieuw de kop opsteken, zoals tuberculose.