A new study says targeting treatment programs at specific neighborhoods may be a better way of controlling tuberculosis in some cities. The study looks at so-called TB hotspots. Lead author Dr. David Dowdy said a hotspot is a "geographically defined area" where TB cases are most prevalent. Dowdy is an assistant professor of epidemiology at Johns Hopkins School of Public Health. Rio hot spots "We looked at the city of Rio de Janeiro that has a population of about 6 ...
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