Malaria causes nearly half a million deaths worldwide every year. Ninety percent of them are in sub-Saharan Africa, where poor infrastructure limits delivery of drugs. But now there is worry that those drugs are losing effectiveness as disease strains become resistant. Special correspondent Fred de Sam Lazaro reports from Cambodia, where scientists are researching and tracking new outbreaks.
In full: https://www.pbs.org/newshour/show/fighting-malaria-in-the-remote-reaches-of-cambodia
