What precautions can you take in your school to reduce the incidence of infectious diseases?

(N/A) To prevent the incidence of infectious diseases in school,the following precautions can be taken:
$a)$ Avoid contact with students suffering from airborne diseases like the common cold,cough,or flu.
$b)$ Ensure the availability of clean and safe drinking water in the school.
$c)$ Maintain clean surroundings in the school to prevent the breeding and multiplication of disease vectors like mosquitoes.
$d)$ Organize and promote childhood immunization programs within the school.