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Subject
- Communicable diseases10
- Epidemics5
- History4
- Public health3
- Sanitation2
- Social aspects2
- Bacteriologists1
- Bacteriology1
- COVID-19 (Disease)1
- Cancer1
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- Communicable Disease Control1
- Communicable Diseases1
- Contemporary Medical Care and Health Policy Collection1
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- Disease Transmission, Infectious1
- Educators1
- Germ theory of disease1
- Health education1
- Health insurance1