Which of the following pairs has an infectious and a non-infectious disease respectively?
Which of the following pairs has an infectious and a non-infectious disease respectively?
The correct option is B AIDS and cancer
Diseases are broadly classified into infectious and non-infectious diseases.
Infectious diseases: These diseases spread from one person to another and hence are called infectious diseases. They are caused by microorganisms called pathogens such as bacteria, protozoans, viruses, etc.
Examples: AIDS, pneumonia, malaria and typhoid.
AIDS is a contagious and fatal disease caused by HIV. HIV can be transmitted by the exchange of body fluids in the following ways:
- sexual contact with the infected person
- transfusion of blood or blood products from an infected to a healthy person
- from an infected mother to her child during birth
- by use of unsterilised needles which have been used by a person infected with HIV
Typhoid is an infectious disease caused by the bacteria Salmonella typhi. It gets transmitted through the contaminated food and water.
Malaria is caused by a protozoan parasite; Plasmodium and it spreads through the bite of female Anopheles mosquitoes. Mosquitoes act as vectors.
Pneumonia is caused by bacteria such as Streptococcus pneumoniae and Haemophilus influenzae. A healthy individual acquires infection by inhaling the droplets/aerosols released by an infected person or even by sharing glasses and utensils with an infected person.
Non-infectious diseases: They do not spread to others and they are restricted within a person who has contracted them. Examples: Diabetes, cancer etc
Cancer is one of the most dreaded diseases of human beings and a major cause of death all over the world. In this disease, cells divide uncontrollably leading to the formation of tumors.
Hence, option b is correct.
Diseases are broadly classified into infectious and non-infectious diseases.
Infectious diseases: These diseases spread from one person to another and hence are called infectious diseases. They are caused by microorganisms called pathogens such as bacteria, protozoans, viruses, etc.
Examples: AIDS, pneumonia, malaria and typhoid.
AIDS is a contagious and fatal disease caused by HIV. HIV can be transmitted by the exchange of body fluids in the following ways:
- sexual contact with the infected person
- transfusion of blood or blood products from an infected to a healthy person
- from an infected mother to her child during birth
- by use of unsterilised needles which have been used by a person infected with HIV
Typhoid is an infectious disease caused by the bacteria Salmonella typhi. It gets transmitted through the contaminated food and water.
Malaria is caused by a protozoan parasite; Plasmodium and it spreads through the bite of female Anopheles mosquitoes. Mosquitoes act as vectors.
Pneumonia is caused by bacteria such as Streptococcus pneumoniae and Haemophilus influenzae. A healthy individual acquires infection by inhaling the droplets/aerosols released by an infected person or even by sharing glasses and utensils with an infected person.
Non-infectious diseases: They do not spread to others and they are restricted within a person who has contracted them. Examples: Diabetes, cancer etc
Cancer is one of the most dreaded diseases of human beings and a major cause of death all over the world. In this disease, cells divide uncontrollably leading to the formation of tumors.
Hence, option b is correct.
