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Estimated values of R0 for different infections and populations.
| Infection | Geographical location | Time | R0 |
| Measles | Cirencester, England | 1947-50 | 13-14 |
| England and Wales | 1950-68 | 16-18 | |
| Kansas, USA | 1918-21 | 5-6 | |
| Ontario, Canada | 1912-13 | 11-12 | |
| Willesden, England | 1912-13 | 11-12 | |
| Ghana | 1960-68 | 14-15 | |
| Eastern Nigeria | 1960-68 | 16-17 | |
| Pertussis | England and Wales | 1944-78 | 16-18 |
| Maryland, USA | 1943 | 16-17 | |
| Ontario, Canada | 1912-13 | 10-11 | |
| Chickenpox | Maryland, USA | 1913-17 | 7-8 |
| Baltimore, USA | 1943 | 10-11 | |
| England and Wales | 1944-68 | 10-12 | |
| Diphtheria | New York, USA | 1918-19 | 4-5 |
| Maryland, USA | 1908-17 | 4-5 | |
| Mumps | Baltimore, USA | 1943 | 7-8 |
| England and Wales | 1960-80 | 11-14 | |
| Netherlands | 1970-80 | 11-14 | |
| Rubella | England and Wales | 1960-70 | 6-7 |
| Czechoslovakia | 1970-77 | 8-9 | |
| Poland | 1970-77 | 11-12 | |
| Gambia | 1976 | 15-16 | |
| Poliomyelitis | USA | 1955 | 5-6 |
| Netherlands | 1960 | 6-7 | |
| Human Immuno-deficiency Virus - I | England and Wales (male homosexuals) | 1981-85 | 2-5 |
| Nairobi, Kenya (female prostitutes) | 1981-85 | 11-12 | |
| Kampala, Uganda (heterosexuals) | 1985-87 | 10-11 |
Source: Anderson R, May R. Infectious diseases of humans. Oxford: OUP; 1991. p.70.
Observe the table and discuss possible social and viral/bacterial characteristics which may relate to different values of R0.
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