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The Ebola epidemic

Liberian election workers watch as a voter washes her hands before casting her vote during the Senate election in Monrovia, Liberia, on Saturday, December 20. Health workers manned polling stations across Liberia on Saturday as voters cast their ballots in a twice-delayed Senate vote that has been criticized for its potential to spread the deadly Ebola disease. Health officials say the Ebola outbreak in West Africa is the deadliest ever. More than 6,000 people have died there, <a href='http://www.who.int/csr/disease/ebola/situation-reports/en/' target='_blank'>according to the World Health Organization.</a>

Liberian election workers watch as a voter washes her hands before casting her vote during the Senate election in Monrovia, Liberia, on Saturday, December 20. Health workers manned polling stations across Liberia on Saturday as voters cast their ballots in a twice-delayed Senate vote that has been criticized for its potential to spread the deadly Ebola disease. Health officials say the Ebola outbreak in West Africa is the deadliest ever. More than 6,000 people have died there, according to the World Health Organization.