An invisible army, difficult to defeat Viruses and bacteria that are becoming more resistant are soldiers of an invisible army, difficult to defeat. Facing this scenario, the countries have to strengthen their control, surveillance, and prevention. (31/Dec/2002) In English (6.9k)
en español (8.27k)
Viruses and bacteria that are becoming more resistant are soldiers of an invisible army, difficult to defeat. Facing this scenario, the countries have to strengthen their control, surveillance, and prevention. (31/Dec/2002)