prepare a brief report on covid-19 diseases report should include its pathogen Carriers read mode (mode of Transmission) preventive measures and why there is no Vaccine till now but covid-19 disease

prepare a brief report on covid-19 diseases report should include its

1.	prepare a brief report on covid-19 diseases report should include its pathogen Carriers read mode (mode of Transmission) preventive measures and why there is no Vaccine till now but covid-19 disease
Answer» this is because the virus KEEPS changing it's NATURE according to the environment and SURROUNDING to live