No abstract available
MeSH terms
- Biological Warfare / history*
- Disease Outbreaks* / history
- Female
- History, 20th Century
- Humans
- Kazakhstan / epidemiology
- Smallpox / epidemiology*
- Smallpox / history
- Smallpox / microbiology
- USSR / epidemiology
- Variola virus / classification
- Variola virus / pathogenicity*