- World Mosquito Day is observed every year on 20 August.
- The day commemorates Sir Ronald Ross’s discovery in 1897 that female Anopheles mosquitoes transmit malaria.
- Ross made the discovery while working in Secunderabad, India.
- His findings helped establish the role of mosquitoes in malaria transmission.
- In 1902, Ronald Ross received the Nobel Prize in Physiology or Medicine for his work on malaria.