Over one hundred years ago on this date, (August 20, 1897), British scientist Sir Ronald Ross discovered that infected female mosquitoes transmit malaria between humans. (Like any vector borne disease, the malaria-causing parasite, Plasmodium, needs a specific host: in this case, the mosquito. The female mosquito needs blood to nourish her eggs; the male just eats nectar.) Dr. Ross received the Nobel Prize for his discovery that year. Today, we mark the day, August 20, as “World Mosquito Day.”
What’s all the buzz about?
A child in sub-Saharan Africa dies every minute as a result of malaria—more than 1,400 children globally every day. Malaria affects about 220 million people, with 80 percent of all cases occurring in just 17 countries. The World Health Organization (WHO) estimates that 660,000 people died from the disease in 2010; most in Africa. Two countries—Democratic Republic of the Congo (DRC) and Nigeria—hold 40 percent of the burden of malaria mortality. Despite these challenges, progress is being made: since 2000, malaria mortality rates have dropped 33 percent in Africa, and 25 percent globally (more on malaria from WHO).