New Zika research from Columbia University suggests that high rates of microcephaly in Brazil were not caused by new mutations in the virus, as previously believed.
A test developed by Columbia University researchers is the first that simultaneously tests for Zika, dengue, chikungunya, and West Nile viruses.
Findings from HIV surveys in Zimbabwe, Malawi, and Zambia reveal that the rate of new infections is stabilizing or declining in those countries.
In Zimbabwe, Malawi, and Zambia, new infections are falling and the percentage of the population infected with HIV is stabilizing.
A global drop in adolescent fertility rates is partly due to rising national wealth and increased educational spending, Mailman researchers have found.
A dermatologist in Vietnam travels to New York for a six-week Columbia tutorial to become the only person in her region of the country qualified to interpret skin biopsies.