Japanese scientist Michiaki Takahashi, renowned for the development of the varicella vaccine, would have been 94 years old on February 17.
Takahashi, who died in 2013, is also recognised for his research on measles and polio vaccines.
On Thursday, Google is changing its logo in 13 countries to a doodle, or illustration, in his honour. This is his story:
Read more at: https://www.aljazeera.com/news/2022/2/17/dr-michiaki-takahashi-why-google-honours-him-today