Artificial active immunity can be acquired from

The study of worms which cause parasitic infestations in man is called

Lung tuberculosis is caused by

Tetanus disease is caused by

Read the following sentences and choose correct sentences

$1.$ Dysentery, plague, diphtheria are caused by bacteria

$2.$ Salmonella typhi directly affect the respiratory system

$3.$ Amoebiasis and Ascariasis are caused by contaminated water

$4.$ Internal bleeding, anemia muscular pain are symptoms of elephantiasis