Respuesta :

Gavin developed artificial active immunity type of immunity from the vaccinations he received. This type of immunity can be induced by a substance that contains an antigen. This substance is called vaccine. The vaccine stimulates a primary response against the antigen. There are no symptoms of the disease.
Kids aging 4-6 years, such as Gavin, should receive 4 vaccines: DPT vaccine, which belongs in a class of combination vaccines against three diseases (diphtheria, pertussis (whooping cough), and tetanus); MMR vaccine, which is an immunization vaccine against measles, mumps, and rubella (German measles); IPV vaccine, which is a vaccine against Polio; Varicella vaccine, which is a vaccine against chicken pox.
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