Disease Causative Agents

Pneumococcal pneumonia is a lung infection caused by Streptococcus pneumoniae, a Gram-positive coccus bacterium.

Yes, severe acute respiratory syndrome (SARS) is a viral respiratory disease caused by the SARS coronavirus.

Yes, it is the correct answer. Varicella disease (Chickenpox) is caused by the varicella zoster virus (VZV), an enveloped double-stranded DNA virus. Red plague or Smallpox is caused by the variola virus, a double stranded DNA virus of the Poxviridae family.

Yes, it is correct. Anthrax is an infectious disease caused by the Gram-positive, spore-forming rod-shaped bacterium Bacillus anthracis. Tetanus is an infectious disease caused by the anaerobic Gram-positive, spore-forming bacterium Clostridium tetani.

Cholera is caused by the bacterium Vibrio cholerae. Smallpox and influenza are caused by viruses, and dysentery can be caused by either bacteria or amoebae, but cholera is the classic bacterial example here.

Both the statements are correct, hence this is the correct answer option.

Influenza, commonly called the flu, is an acute, contagious, respiratory tract infection, which is caused by one of the influenza viruses. The severity of influenza symptoms depends on the type of influenza virus, and the age and health of the patient. Influenza may produce no symptoms, mild-to severe symptoms, or fatal illness.

Bronchiolitis is the inflammation of the bronchioles, the small airways.

Pneumonia is an infection of the lung tissue. It is usually associated with cough, sputum, fever and shortness of breath. There are various kinds of pneumonia. In adults, most pneumonia are due to bacterial infections (the most common infectious cause of pneumonia is the bacteria, Streptococcus Pneumoniae).

Pleurisy is inflammation of the lining of the lungs and chest (the pleura) that leads to chest pain (usually sharp) when you take a breath or cough. Pleurisy may develop when you have lung inflammation due to infections such as pneumonia or tuberculosis. It is often a sign of a viral infection of the lungs. 

Sarcoidosis is a rare disease that results from inflammation. Basically sarcoidosis is a lung's disease but it can occur in almost any organ. It is a multisystem (involves the entire body) granulomatous (small growths or lumps) disease that produces inflammation or swelling of the tissues in any part of the body.

Hypertension is widely known as the silent killer because it often presents no symptoms until it causes severe damage to the heart, brain, or kidneys. Other diseases listed typically present with noticeable symptoms.

Hand, foot, and mouth disease (HFMD) is a common viral illness that frequently affects infants and children. Outbreaks have historically been reported in various regions, including China.

This is the correct option, as smallpox is not caused by a bacteria. It is caused by a virus.