Countries have been racing to develop a vaccine against the novel coronavirus since it was first detected in Wuhan, China in December and has been rapidly spreading throughout the world.

According to data from U.S.-based Johns Hopkins University, as of March 25, there were over 422,000 confirmed cases in 170 countries and regions and more than 18,900 deaths.

The countries hardest-hit by the virus are Italy, China, Spain, and Iran. In Turkey, 1,872 people have been diagnosed with the virus and 44 people have died.

Measures to fight coronaviruses include determining their transmission routes, identifying symptoms, diagnosis, creating vaccines,

Read more: COVID-19 guide: Everything from A to Z