Cordyceps sinensis, also called Chinese caterpillar fungus, Cs-4, Dong Chong Xia Caoor, or semitake, is a fungus native to the Tibetan plateau in China.
No it would not help 'CURE' them, if someone is infected with a virus it is only their own immune system that can cure them.
However, improving sanitary condition will help prevent the virus form...