![](http://www.ecns.cn/hd/2020/02/27/05761df679594976bb1d6fc6134f9fa8.jpg)
Recovered coronavirus patients donate plasma in a blood donation bus at the Beijing You'an Hospital in Beijing, Feb. 27, 2020. (Photo: China News Service/ Cui Nan)
![](http://www.ecns.cn/hd/2020/02/27/27f2735ee0fe4f8c9f384d200c0689bf.jpg)
Recovered coronavirus patients donate plasma in a blood donation bus at the Beijing You'an Hospital in Beijing, Feb. 27, 2020. (Photo: China News Service/ Cui Nan)
![](http://www.ecns.cn/hd/2020/02/27/d66ff813c07343678dd0ef8d7b29c5ca.jpg)
Recovered coronavirus patients donate plasma in a blood donation bus at the Beijing You'an Hospital in Beijing, Feb. 27, 2020. (Photo: China News Service/ Cui Nan)
![](http://www.ecns.cn/hd/2020/02/27/70a7026735d44c41bf68d7dc437771a6.jpg)
Recovered coronavirus patients donate plasma in a blood donation bus at the Beijing You'an Hospital in Beijing, Feb. 27, 2020. (Photo: China News Service/ Cui Nan)