No abstract available
Publication types
- Biography
- Historical Article
MeSH terms
- Argentina
- Brazil
- Chile
- Costs and Cost Analysis
- Evaluation Studies as Topic
- Freeze Drying
- History, 17th Century
- History, 18th Century
- History, 19th Century
- History, 20th Century
- History, Ancient
- North America
- Pan American Health Organization
- Paraguay
- Population Surveillance
- Smallpox / history
- Smallpox / prevention & control*
- Smallpox Vaccine
- South America
- United States
- Uruguay
- Variola virus / isolation & purification
- World Health Organization