Ever since the Ebola and Zika epidemics, public health officials have advocated for a special emergency fund that would allow the United States to respond rapidly to disease outbreaks.
Congress' Republican leaders face decisions on averting a federal shutdown, containing the Zika virus and impeaching the head of the IRS.
Here is a list of five very real scenarios that could cause the U.S. government to shut down just weeks before the presidential election.
Indonesia is screening travelers from neighboring Singapore for the mosquito-borne Zika virus as the city-state reports a growing number of infections.
Federal health authorities on Monday urged pregnant women not to visit a South Florida neighborhood where new cases of the Zika virus have emerged.
Puerto Rico and some areas of Florida are now spraying pesticides to try to control the mosquito population. This will likely fail for several reasons.
Zika has officially reached the Continental United States; all previous Zika cases were the result of initial infections that occurred in other countries.