Disease Causative Agents

Bird flu, or avian influenza, primarily affects birds, especially poultry like chickens and ducks.

Asthma is a part of the atopy syndrome. 

SARS is a viral respiratory illness caused by the SARS-associated coronavirus (SARS-CoV). It is not caused by bacteria, protozoa, or prions.

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Anaemia is a blood deficiency disorder. It is a non-communicable disease.

Dysentery is not a viral disease.

Leukaemia is the cancer of white blood cells. It is a non-infectious disease.

Hepatitis B is a viral disease.

Polio virus affects the central nervous system and can cause temporary or permanent paralysis.

 The correct answer is (1).

Asthma is a common long-term inflammatory disease of the airways of the lungs.

Measles, also known as rubeola, is a viral infection of the respiratory system. Interferons are a group of signalling proteins that are made and released by host cells in response to the presence of several pathogens, such as viruses.