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Volume 7, Number 3—June 2001

Perspective

Seasonal Variation in Host Susceptibility and Cycles of Certain Infectious Diseases

Scott F. DowellComments to Author 
Author affiliation: Centers for Disease Control and Prevention, Atlanta, Georgia, USA

Main Article

Figure 1

Seasonal variation in the occurrence of three human pathogens in the United States. A: an annual cycle of rubella activity was maintained between larger epidemics, which occurred every 6 to 9 years. B: the percentage of specimens testing positive for influenza viruses among specimens tested by World Health Organization and U.S. National Respiratory and Enteric Virus Surveillance System collaborating laboratories. C: a consistent pattern of rotavirus seasonality is evident in the U.S. National Re

Figure 1. . Seasonal variation in the occurrence of three human pathogens in the United States. A: an annual cycle of rubella activity was maintained between larger epidemics, which occurred every 6 to 9 years. B: the percentage of specimens testing positive for influenza viruses among specimens tested by World Health Organization and U.S. National Respiratory and Enteric Virus Surveillance System collaborating laboratories. C: a consistent pattern of rotavirus seasonality is evident in the U.S. National Respiratory and Enteric Virus Surveillance System. Adapted from references 4-6.

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