Question

nowadays safer vaccines are being produced.

give reason​

Answer 1

Answer:

nowadays safer vaccines are being produced.

reason is here :

(1) Before the advent of biotechnology, the vaccines were made from inactive or de.ad pathogens of that disease.

(2) Such vaccines used to produce some disease symptoms is some cases.

(3) The antigen of the disease is researched upon and its genetic cod.e is found out.

(4) A similar antigen is made in the laboratories which is used as a vaccine.

(5) Such vaccines are more thermostable and remain active for longer duration. Therefore, the vaccines are now safer.

Explanation:

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