Air pollution in one city surpasses WHO guideline by 100 times
CDC: Data shows Zika virus stays longer in urine than blood
WHO issues yellow fever warning as deadly outbreak grows
Brazilian scientists find new Zika-linked brain disorder in adults
British nurse who recovered from Ebola back in hospital
Genes, bugs and radiation: WHO backs new weapons in Zika fight
WHO expects to set link between Zika and microcephaly in weeks, vaccine 18 months
3 ways to combat Zika, from mosquito-eating fish to fogging
US health official: Widespread Zika vaccine not likely to be available for years
Mother who contracted Zika: 'I knew something was wrong'
WHO declares Zika virus a global health emergency
What is the Zika virus? Your questions answered
Pregnant woman among 3 confirmed Zika cases in New York City
WHO says Zika virus spreads explosively, 4M cases forecast
Zika virus outbreak: WHO chief convenes emergency committee meeting
Arkansas officials confirm Zika virus case and it's expected to spread
WHO warns Zika to spread across Americas, spurring vaccine hunt
WHO: Number of obese and overweight children under 5 'alarming'
Thailand quarantines 32 people after second MERS case confirmed
Health officials probe tie between Zika, paralyzing syndrome
Study: As many as 90 percent of cancer cases are caused by lifestyle
Global health experts accuse WHO of 'egregious failure' on Ebola
Bacon and other processed meats can cause cancer, experts say
Nigeria declared Ebola-free; 'spectacular success'
WHO: Senegal Ebola case 'a top priority emergency'
WHO's Swine Flu Pandemic Response Wasn't Influenced by Vaccine Makers
Binge Drinking Is Taking a Heavy Toll on Health Worldwide
WHO Gives Approval to Pfizer's Pediatric Vaccine Prevnar 13
As swine flu becomes a pandemic, where are the vaccines?