013. Name of causative agent of tuberculosis, chicken pox, polio, Typhoid and measeles. Write their preventive measures also
Answers
Explanation:
diseases in humans.
Some of the bacterial diseases are Syphilis, Pneumonia, Tetanus, and Tuberculosis. Examples of diseases caused by a virus are Chickenpox, Small Pox, Measles, Polio. Fungal infections include Ringworm infection, Athlete’s foot, Yeast infections etc. Malaria is a disease caused by an organism belonging to Protista. Diseases caused by helminths include Ascariasis, Taeniasis etc.
Types of diseases
Some Types of Diseases Explained Briefly
Typhoid
It is caused by the bacterium, Salmonella typhi. The pathogen enters the body through contaminated food and water. High fever, weakness, stomach pain, headache, constipation, loss of appetite are the symptoms of this disease. Widal test confirms this disease.
Understand the concept of Disorders of Immune System
Pneumonia
It is caused by Streptococcus pneumoniae and Haemophilus influenzae bacteria. This disease affects the lungs. The alveoli of the lungs get infected and filled with fluid, causing respiratory problems. This is a disease that is acquired by inhaling the droplets or aerosols that are released by an infected person. The main symptoms include chills, fever, headache, and cough.
Common Cold
The common cold is generally caused by a group of viruses called rhinovirus. The respiratory passage and the nose are commonly infected here. Nasal congestion, discharge, sore throat, cough, hoarseness, tiredness, are some of the associated symptoms of common cold, that can last for up to seven days.
This infection is transmitted when an infected person releases the droplets either through a cough or sneeze. These droplets can be either inhaled directly by other people or can be transmitted with the help of contaminated objects.
Malaria
It is a disease caused by a protozoan called Plasmodium. There are different types of malaria caused by different types of species of Plasmodium. Some of the species are Plasmodium vivax, Plasmodium malaria, Plasmodium falciparum. Malignant and fatal malaria is caused by Plasmodium falciparum.
The female Anopheles mosquito is the vector that carries the infectious form of the pathogen into the human body. Therefore, the malarial parasite has two hosts, i.e. human and mosquito to complete its life cycle.
When an infected female Anopheles mosquito bites a human, it transfers the sporozoites of the Plasmodium parasite. These parasites multiply in the liver cells and then attack the RBCs, rupturing them. When RBCs rupture, they release a toxic substance called haemozoin. This toxic substance is responsible for the classic symptoms of malaria – fever associated with chills. The spread of the disease can be controlled by killing the vector, mosquito.
Types of diseases
Amoebiasis
Entamoeba histolytica causes Amoebiasis. It is a protozoan parasite that is present in the large intestine of a human. Amoebiasis is also called as amoebic dysentery. This disease is transmitted by houseflies that carry the parasite from the contaminated faeces of an infected person to any food product, thereby contaminating it. The symptoms include abdominal pain, cramps, constipation, stools with excess mucous etc.
Ascariasis
It is a disease that is caused by a helminth, Ascaris lumbricodes, also called the roundworm. It is an intestinal endoparasite found in humans. Muscular pain, internal bleeding, fever, anaemia, intestinal passage blockage are some symptoms of this disease. The infection is spread by contamination of soil, water, plants, etc. as the eggs of the parasite are excreted out through the faecal matter.
Filariasis
Also called as elephantiasis, this disease is characterized by the inflammation of the affected organs. Even genital organs can get affected by this disease. Wuchereria bancrofti and Wucheria malayi are the filarial worms that are responsible for causing this disease. The female Culex mosquito acts as the vector for transmitting the pathogen.
Fungal Diseases
Ringworm infection is caused by Fungi. Some of the Fungi that cause this infection are Microsporum, Trichophyton, and Epidermophyton. It is a very common infectious disease that is characterized by intense itching and dry, scaly lesions on the skin, nails, and scalp. Moisture and heat are the favourable factors that help the fungi grow.
Preventive Measures
The different types of diseases, especially, infectious diseases can be prevented by taking the right measures. Personal and public hygiene play an important role here. Eradication of vectors that carry the pathogens is also an effective preventive measure. Vaccinations also help in tackling many infectious diseases