In this prospective study, we investigated the association between presence of a virus and severity of disease in hospitalized children with severe pneumonia to provide an indication of causality.
Britain, Japan and other countries with many cases argued that World Health Organization pandemic alerts should measure a virus's severity, not just its spread.
A virus's severity, she said, varies from country to country, depending on the population's previous immunity, average age, the level of readiness of the health care system and the prevalence of diseases that could make people more vulnerable.
Because of the highly contagious nature of the virus and severity of economic impacts associated with the disease, FMD is the most important disease limiting the trade of animals and animal products throughout the world (Arzt et al. 2011a, b).
Pre-pandemic vaccination has been put forward as a strategy to ameliorate the spread of virus and severity of disease, however all vaccines have the limitation that they protect at best against strains from the same subtype [10].
Although there was a high seroprevalence of human immunodeficiency virus (HIV), severity of cholera was not greater with HIV infection.
Invasive properties of pandemic (H1N1) 2009 virus and severity of illness may be more closely related to heterogeneity in host immunity than to viral load (9 ).
Even if the possibility of a 1918-like seemsrio seems unlikely with the current circulating virus, the severity of the disease remains uncertain.
In 2011, an international partnership termed CONSISE (the Consortium for the Standardization of Influenza Seroepidemiology) was created in recognition of a need identified during the 2009 pandemic for timely seroepidemiological data to better estimate pandemic virus infection severity and attack rates and to inform policy decisions.
