The average virus outbreak occurs on a 12-day voyage and causes 6.6 percent of passengers to fall ill. Longer cruises give the virus more time to spread but the factors that lead to an outbreak ...

Viral fever, an illness associated with an increase in average body temperature, is caused by a virus. Because of environmental factors, it can be categorised as either a seasonal fever or fever.

Viral fever, an illness associated with an increase in average body temperature, is caused by a virus. Because of environmental factors, it can be categorised as either a seasonal fever or fever.