![](http://www.ecns.cn/hd/2020/04/08/b923d5f1ad3a45dba4c0faa16a1e7d31.jpg)
An Egyptian veterinarian administers an avian flu vaccination to a pelican held by a zookeeper at the closed Giza Zoo, during the spread of coronavirus disease (COVID-19) on the outskirts of Cairo, Egypt, April 7, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/04/08/a2c3e1505fbc476e88966247cf714698.jpg)
Chickens are seen as an Egyptian veterinarian administers an avian flu vaccination at the closed Giza Zoo, during the spread of coronavirus disease (COVID-19) on the outskirts of Cairo, Egypt, April 7, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/04/08/631582e7982a4a4fbf5d17640f7420b5.jpg)
An Egyptian veterinarian administers an avian flu vaccination to a duck held by a zoo keeper at the closed Giza Zoo, during the spread of coronavirus disease (COVID-19) on the outskirts of Cairo, Egypt, April 7, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/04/08/bbbd5f384a8e425f8cf60a59be09a2d6.jpg)
Zoo keepers hold an Emu as an Egyptian veterinarian administers an avian vaccination at the closed Giza Zoo, during the spread of coronavirus disease (COVID-19) on the outskirts of Cairo, Egypt, April 7, 2020. (Photo/Agencies)