Pneumonia is caused by viruses, bacteria, and fungi.

Chicken pox can be transmitted through direct contact, airborne transmission but not through respiratory droplets;

It is the nature of pathogens to invade its host through certain points of entry to cause morbidity.

Communicable Diseases are diseases that do not transfer from one person to another.

Dry cough, tiredness, loss of taste or smell and nasal congestion, are some of the indications of the Illness stage.

This is the interval when acute symptoms of infection disappears(length depends on severity of infection and sick person’s state of health)

This is the stage when the sick person exhibits signs and symptoms specific to type of infections.

This is the interval between entrance of pathogens into the body to the appearance of first symptoms.

This is the interval from the onset of nonspecific signs and symptoms to the appearance of more specific symptoms. Time when microorganisms grow and multiply and the sick person may be more capable of spreading disease to others.

The most common reservoir of pathogens is the human body.

The leading cause of death which is communicable is tuberculosis.

Dengue and Malaria are caused by mosquitoes and are vector-borne diseases.

Coughing and sneezing are direct modes of transmission that cause infection.

 Infectious Diseases are also called Communicable Diseases.

Pneumonia is caused by viruses, bacteria, and fungi.