The chance of human-to-human transmission of H5N1 is “very low,” Chowdhury claims. However, if it were to occur in a very sustained fashion, it could rock the world in a means not viewed Because the 1918 Spanish Flu. one) These vaccines are not tested on genuine folks in authentic situations https://www.dailypioneer.com/uploads/2019/epaper/april/chandigarh-english-edition-2019-04-02.pdf