Common cold is not cured by antibiotics because it is:

Select the correct statement with respect to diseases and immunisation?

If due to some reason B-and T-lymphocytes are damaged, the body will not produce antibodies against a pathogen.
Injection of dead / inactivated pathogens causes passive immunity.
Certain protozoans have been used to mass produce hepatitis B vaccine.
Injection of snake antivenom against snake bite is an example of active immunisation.

Salmonellais related with

Solution

Tetanus is caused by Clostridium tetani. Tuberculosis is caused by Mycobacterium tuberculosae. Polio is caused by virus. Salmonella typhi causes typhoid fever. The incubation period is about two weeks. The patient first suffers from high fever of 40°C and continual headache.

Which one of the following conditions though harmful in itself, is also a potential saviour from a mosquito borne infectious disease?

Solution

A sickle cell anaemia affected person is more resistant to mosquito born infectious disease because the sickle - cell shaped RBCs are hostile to the protozoa Plasmodium.

Diphtheria is caused by

Take the odd one out

Solution

Rabies, Influenza and AIDS are viral diseases, Amoebiasis, Ascariasis and Trypanosomiasis are caused by Protozoa; Taeniasis, Ascariasis and Elephantasis are the diseases caused by Helminths but Cancer,Tuberculosis and Tetanus are not related diseases.Tuberculosis and Tetanus are bacterial diseases while cancer is not.

Which of the following is a sexually transmitted disease ?

Solution

A common sexually transmitted disease most often affecting the genitourinary tract and occasionally, the pharynx, conjuctiva, or rectum.

‘Encephalitis’ in man is a viral disease and is transmitted by

Aedes aegyptiis a vector of

Vaccines are

Solution

Vaccine contains dead, attenuated form or antigen of a pathogen which can be injected to provide immunity towards that pathogen. Monoclonal antibodies are homogenous immunological reagents of defined specificity, so that these can be utilized for diagnosis and screening with certainty.

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