Communicability of disease depends upon the availability of a 

1. pathogen 

2. parasitic

3. healthy person 

4. susceptible person

Which of the following is used to make vaccines?

1. Activated pathogen

2. Pathogen blocked by antibody 

3. Attenuated pathogen 

4. None of the above

An organism which has been used as a weapon in biological war causes which of the

following disease?

1. malaria

2. common cold

3. influenza

4. anthrax

Opium is obtained from which part of the plant Papaver somniferous?

1. Inflorescence

2. Male part (dried)

3. Fruit (unripe)

4. Seeds

Malaria infection can be transmitted by 

1. the bite of infected female Anopheles mosquito

2. vertical transmission through placental defect

3. blood transfusion 

4. all of these.

Memory cells are stored in

1. spleen

2. lymph nodes

3. both 1. and 2.

4. a specialised area of brain tissue

The highly pathogenic influenza A (H5NI) virus infects 

1. poultry 

2. ducks

3. migratory birds

4. all of these.

Enteric fever is caused by

1. Salmonella enteritidis

2. S. typhi

3. S. typhimurium

4. none of the above

Stem cells arise from

1. bone marrow

2. yolk sac

3. foetal liver

4. all the above.

Ingestion of food and water contaminated with infective eggs is the primary route of infection for