Why is vaccination promotion necessary? O because vaccines can prevent food-borne illnesses that are common and harmful
because many children and adults are not vaccinated for preventable diseases
O because vaccines have many negative side effects that keep people from getting them
O because many people are not vaccinated for smallpox and it could reappear

Vaccination promotion is necessary because many children and adults are not vaccinated for preventable diseases.

Explanation:

Vaccination consists of the administration of biological preparations, called vaccines, in order to prevent infection or complications due to infectious diseases.

The importance of promoting vaccination is to be able to carry it out in people, children and adults, who have not yet received vaccines. The objective is to prevent these people from acquiring preventable diseases.

The other options are not correct because:

one day because their over eating or whenever it kicks in their body