Rare Disease Day: February 28th(29th)
February 28th is “Rare Disease Day”.
This is an anniversary to raise awareness of rare and difficult-to-treat diseases.
It was first held in Sweden on this day in 2008.
In leap years, 29th is this anniversary.
The end of February was chosen because the 29th, which is only once every four years, was considered to be ”rare”.
– Rare Disease Day ® 2021
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