Hand, Foot, and Mouth Disease caused by enterovirus in China between 2008 and 2009 was studied and the case fatality ratio was 0.03% (Zhang et al, 2011)

Microbial Group: 
Virus

In 2007, influenza caused 411 deaths: 79 of them in persons aged 75-84 years and 139 of them in persons aged 85 years and older (Xu et al, 2007)

Microbial Group: 
Virus

About 15%-20% of hospitalized Lassa fever patients will die from the illness. It is estimated that the overall mortality rate is 1%, however during epidemics mortality can climb as high as 50% (Wikipedia)

Microbial Group: 
Virus

During a 6-week period in 2003 in a long term care facility for elderly persons, 56 residents and 26 staff developed respiratory illness in a long-term facility; 12 residents died (Louie et al, 2005)

Microbial Group: 
Virus

Rotavirus was estimated to be the cause of 37 deaths annually when data were extrapolated to the US population (Fischer et al, 2007)

Microbial Group: 
Virus

Less than 1% for people aged 24 or younger, 6% for those 25 to 44, 15% for those 45 to 64, and more than 50% for those over 65 (Update 49)

Microbial Group: 
Virus