What is a specific causative agent of disease?

Infectious diseases can be caused by: Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis. Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.

What are the 4 types of disease agents?

The four different categories of infectious agents are bacteria, viruses, fungi, and parasites.

What are the 6 agents of disease?

A brief review of the general characteristics of each of these agents and examples of some diseases they cause follows.

  • Bacteria. …
  • Viruses. …
  • Fungi. …
  • Protozoa. …
  • Helminths. …
  • Prions.

What are the 5 agents of disease?

agents cause a wide variety of diseases affecting various parts of the body. The five main types of infectious agents are bacteria, protozoa, viruses, parasitic worms, and fungi.

What is the causative agent of dysentery?

Causative agent

Amoebic dysentery is an intestinal infection caused by a protozoan parasite called Entamoeba histolytica.

What are the causes of disease Class 9?

Immediate cause: The organisms that enter our body and cause the disease are termed as an immediate cause. For example, virus, bacteria, protozoa etc. Contributory cause: The secondary factors which led these organisms enter our body are termed as a contributory cause.

How is disease caused?

A disease may be caused by external factors such as pathogens or by internal dysfunctions. For example, internal dysfunctions of the immune system can produce a variety of different diseases, including various forms of immunodeficiency, hypersensitivity, allergies and autoimmune disorders.

What are the three agencies under Department of health that are responsible in communicable diseases prevention and control?

The National Immunization Program (NIP), Oral Health, Infectious Diseases and Family Health Division and report directly to the Director IV of the Disease Prevention and Control Bureau.

What is the pathophysiology of dysentery?

Dysentery results from viral infections, bacterial infections, or parasitic infestations. These pathogens typically reach the large intestine after entering orally, through ingestion of contaminated food or water, oral contact with contaminated objects or hands, and so on.

What is the causative organism of amoebiasis state the symptoms of the disease?

Amebiasis is a parasitic infection of the intestines caused by the amoeba Entamoeba histolytica, or E. histolytica. The symptoms of amebiasis include loose stool, abdominal cramping, and stomach pain.

What is amoebiasis write the name of its causative agent?

Amoebiasis is also known as amoebic dysentery. It is caused by a protozoan parasite of the human large intestine, Entamoeba histolytica.

How is amoebiasis transmitted?

Amebiasis is contagious. People with amoebas in their intestines can pass the infection to others through stool (poop) even if they have no symptoms. When infected stool contaminates food or water supplies, amebiasis can spread quickly to many people at once.

What is the causal organism for following diseases a typhoid B amoebiasis?

It is caused by the parasite Entamoeba histolytica . It mainly affects the colon of the human body. It can sometimes be severe and shows no mild symptoms. As a result of this disease, bloody diarrhea, pain in abdominal sites can also happen.

Which one of the following is the causal organism of cholera and typhoid?

TF is mainly caused by Salmonella typhi, whereas cholera is caused by intestinal infection by the toxin-producing bacterium Vibrio cholerae.

Which of the following organism belong to the same phylum as that of causal organism of elephantiasis?

This, the correct answer is option A i.e. Aschelminthes.

What bacteria causes elephantiasis?

Donovanosis is caused by the bacterium Calymmatobacterium (Klebsiella) granulomatosis. Donovanosis causes genital elephantiasis because the body’s immune system response to the bacterium causes inflammation and narrowing (constriction) of the lymphatic vessels.

Which area Bancrofti the filarial worm that causes elephantiasis belongs to the phylum?

So, the correct answer is ‘Nemathelminthes‘.

What is the name of the disease caused by Wuchereria bancrofti?

There are three different filarial species that can cause lymphatic filariasis in humans. Most of the infections worldwide are caused by Wuchereria bancrofti. In Asia, the disease can also be caused by Brugia malayi and Brugia timori. The infection spreads from person to person by mosquito bites.

What disease does Wuchereria bancrofti cause?

Wuchereria bancrofti is a filarial (arthropod-borne) nematode (roundworm) that is the major cause of lymphatic filariasis. It is one of the three parasitic worms, together with Brugia malayi and B. timori, that infect the lymphatic system to cause lymphatic filariasis.

What is the epidemiology of Wuchereria bancrofti?

Human lymphatic filariasis is caused mainly by Wuchereria bancrofti, Brugia malayi and Brugia timori. Of the estimated 90.2 million people infected, more than 90% have bancroftian and less than 10% brugian filariasis.

What epidemiology means?

By definition, epidemiology is the study (scientific, systematic, and data-driven) of the distribution (frequency, pattern) and determinants (causes, risk factors) of health-related states and events (not just diseases) in specified populations (neighborhood, school, city, state, country, global).

What is the vector of Wuchereria bancrofti?

Background. Wuchereria bancrofti, the causative agent of lymphatic filariasis (LF) is transmitted by mosquito species belonging to Anopheles, Aedes, Culex and Mansonia depending on the geographic area.