Published in TB and Outbreaks Week, November 14th, 2006
According to a recent study from Germany, "Although the potential for bioterrorism has led to discussions on the durability of vaccine-induced immunity, the actual duration of protection against smallpox is still unknown.
"It has previously been suggested that at least partial protection against severe and fatal smallpox may persist throughout life. In this article, we analyzed 6 major smallpox outbreaks that occurred before and after 1900 in the United Kingdom."
"These analyses are based on the age-dependent incidence of smallpox and the fraction of severe...
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