Figure 1From: Antiviral prophylaxis during pandemic influenza may increase drug resistance Course of disease. Model assumptions on the course of disease of cases with and without prophylaxis if people are infected with the drug sensitive virus. Without prophylaxis, one third of infected individuals remains asymptomatic, one third becomes moderately sick and one third becomes severely sick and needs medical help. Prophylaxis halves the fractions of moderately and severely sick individuals and doubles the fraction of infected individuals who remain asymptomatic, but only half of the asymptomatic infections lead to protective immunity.Back to article page