2) cowbox pathogens.
3) due to cowpox and smallpox being quite similar, the body was able to recognise the similar smallpox virus from its antigens and was able to fight the disease effectively.
4) because he was vaccinated with cow pox pus.
5) He will not be infected by smallpox due to the vaccination he had from Jenner, who later on proved the immunisation by inoculating the boy with small pox 6 weeks later, which, had no affect later on in his life.
