Children get their diphtheria inoculation in 1944. Kurt Hutton/Getty Images hide caption

Goats and Soda
STORIES OF LIFE IN A CHANGING WORLDInfectious Disease
Friday
Tuesday
A girl is vaccinated against dengue as part of a public immunization program for children in the Philippines. The program was suspended after the company raised safety concerns about the vaccination. Dondi Tawatao/Getty Images hide caption
Friday
Twesigye Jackson Kaguri, in the blue T-shirt on the roof, helps build a home for a grandmother supported by his HIV/AIDS nonprofit in rural Uganda. Matt Stauble hide caption
Sunday
A municipal worker sprays disinfectant during the clean-up of a market in Madagascar's Anosibe district — a measure to fight the outbreak of bubonic plague, which can be spread by a flea bite. RIJASOLO/AFP/Getty Images hide caption
Thursday
Rat traps are a weapon behind used to fight the plague in Madagascar, since the rodents carry the disease. But getting rid of all the rats would be difficult — and without rats, plague-infected fleas could then turn to humans for a blood meal. RIJASOLO/AFP/Getty Images hide caption
Wednesday
Workers spray to kill fleas in a public school in Antananarivo, Madagascar's capital. A bite from an infected flea can spread the plague, which has stricken 157 people in the island nation since August. Anadolu Agency/Getty Images hide caption
Thursday
Twins Heloisa (left) and Heloa Barbosa, both born with microcephaly, had a one-year birthday party on April 16 in Areia, Brazil. Their mother says she contracted the Zika virus during pregnancy. Mario Tama/Getty Images hide caption
Wednesday
This computer-generated image shows the structure of the hepatitis B virus. Science Picture Co/Science Picture Co hide caption
Saturday
A newly detected type of Klebsiella pneumoniae bacteria (in red) has acquired genes that make it more deadly. Science Source hide caption
Wednesday
Probiotic Bacteria Could Protect Newborns From Deadly Infection
Wednesday
A worker fogs a neighborhood on the outskirts of Colombo in Sri Lanka in an effort to ward off mosquitoes. The country is facing an outbreak of dengue fever, a mosquito-borne disease. Ishara S. Kodikara/AFP/Getty Images hide caption
Tuesday
Wednesday
Maria Carolina Silva Flor and Joselito Alves dos Santos with their 18-month-old daughter, Maria Gabriela Silva Alves. The baby was born with Zika syndrome. Amanda Klasing hide caption
Thursday
Ticks of the genus Hyalomma, pictured here, are principally responsible for passing on Crimea-Congo hemorrhagic fever to humans. Adam Cuerden hide caption
Friday
The scene after a mortar attack on the southern city of Taez. Ahmad Al-Basha/Getty Images hide caption