A thrust area in community health is
Prevention and control of communicable diseases
Prevention of blindness
Maternal and child health
School health services
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
Which of the following set is of vector host
Tobacco contains ........... which raise blood pressure and increase heart rate.
Which of the following is the cancerous state of blood
Which one of the following statements is correct ?