Emerging Infectious Disease ISSN: 1080-6059
Volume 4, Number 1—March 1998
Synopsis
Genetic Diversity of Wild-Type Measles Viruses: Implications for Global Measles Elimination Programs
Figure 4

Figure 4. Change in genetic groups of measles viruses associated with U.S. cases and outbreaks between 1988 and September 1997. Arrows indicate sources of virus, if known.
Lessons from the History of Quarantine, from Plague to Influenza A
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