Identify the incorrect statement/s :

(A) Intestinal perforation and death may occur in severe cases of typhoid infection.

(B) Common cold is caused by Rhinoviruses.

(C) Lips and fingernails may turn grey to bluish colour in severe cases of pneumonia.

(D) Pneumonia is caused by Salmonella.

(E) Typhoid fever could be confirmed by Widal test.

Choose the answer from the options given below

(D) only

The correct answer is Option (3) -(D) only

Salmonella typhi is a pathogenic bacterium which causes typhoid fever in human beings. These pathogens generally enter the small intestine through food and water contaminated with them and migrate to other organs through blood. Sustained high fever (39° to 40°C), weakness, stomach pain, constipation, headache and loss of appetite are some of the common symptoms of this disease. Intestinal perforation and death may occur in severe cases. Typhoid fever could be confirmed by Widal test .

Bacteria like Streptococcus pneumoniae and Haemophilus influenzae are responsible for the disease pneumonia in humans which infects the alveoli (air filled sacs) of the lungs. The symptoms of pneumonia include fever, chills, cough and headache. In severe cases, the lips and finger nails may turn gray to bluish in colour.

Many viruses  cause diseases in human beings. Rhino viruses represent one such group of viruses which cause one of the most infectious human ailments – the common cold.