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Common Diseases: Download Science Study Notes Free PDF For REET Exam

Common Diseases: Download Science Study Notes Free PDF For REET Exam_30.1

In many teaching exams including  REETUTET DSSSB Exams etc. Science may be an interesting subject with interesting notes and quizzes. In TET Exams, there will be 30 questions i.e. 15 Questions Science content and 15 questions of Science Pedagogy in REETUTET  and other State TET Exams. Science comprising of various branches of studies like chemistry, physical science, and life science.

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Disease:These are the conditions of the body or a part of it in which functions disturbed.

Disease area of two types:

  1. Communicable Diseases:
  • Infections which spread from infected person to healthy one.
  • They are of further two types.

A. Contagious: Spread through direct contact.

Examples – Chickenpox, mumps, Syphilis, measles, dermatitis, eczema, etc.

B. Non- contagious: Spread through without coming in direct contact.

Examples – Influenza, tetanus, malaria, tuberculosis, etc.

  1. Non- communicable Diseases
  • Non-spreadable or non-infectious.
  • Deficiency diseases (hormonal and vitamin deficiency).
  • Degenerative disease (diseases due to inactively of body organs).
  • Allergic disease (disease due to color, dust, etc.)
  • Addiction

Genetic Disorders:

  • Gonorrhea, syphilis, trichomoniasis, etc.

Practice REET Previous Year EVS Quiz For REET Exam Here

Causal Organisms of Some Diseases:


Causal Organism

Spread/Transmitted by

Viral Diseases

Influenza Myxovirus A, B, C Droplet infection
Common cold Rhino virus Droplet infection
Small pox Variola virus Droplets, skin wounds
Chicken pox Varicella Zoster Contact, droplet infection
Measles Paramyxovirus Droplet infection
German Measles (Rubella) Rubella virus Droplet infection
Rabies Rabies virus Biting or saliva of rabies animals
Mumps Paramyxo virus Droplet infection
Trachoma Chlamydia trachomatis Contact, droplet infection
Poliomyelitis Poliovirus (Picorna virus) Droplet infection, human faeces
Yellow fever Arbo virus Ticks, mosquitoes
AIDS HIV Blood transfusion, unsafe sexual intercourse, infected needless
Hepatitis HAV, HVB, HCV HDV, HEV Blood transfusion, sexual inter course
Dengue fever DEN₁, DEN₂, DEN₃, DEN₄ Mosquito Aedes aegypti
Diphtheria Cornebacterium diphtheriae Droplet infection

Bacterial Diseases

Tuberculosis Mycobacterium tuberculosis Droplet infection, milk of infected cattle
Whooping cough(pertussis ) Bordetella pertusis Droplet infection
Gonorrhea Neisseria gonorrhea Sexual contact
Syphilis Treponema pallidum Sexual contact
Tetanus Clostridium tetani Injuries through infected objects
Botulism Clostridium botulinum Infected food
Cholera Vibrio coma, V. Cholera Faecal contamination
Typhoid Salmonella typhi or S. typhosa Faecal contamination
Pneumonia Diplococcus Pneumonia Sputum of patient
Plague Yersinia pestis or Pasteurella pestis Rat flea bite
Leprosy (Hensen’s disease) Mycobacterium leprale Long and close contact with patient
Bacterial dysentery Shigella dysenteriae Faecal contamination
Fungal Diseases
Athlete’s foot Tinea pedis
Head Ringworm Tinea captitis Direct contact through combs, brushes, caps etc.
Candidiasis Candida albicans

Protozoans Diseases

Malaria Plasmodium vivax Female Anopheles mosquito
Amoebiasis Entamoeba histolytica Uncooked or unhygienic food faecal contamination.
Trypanosomiasis (Sleeping sickness) Trypanosoma sp. Bite of tse -tse fly.
Leishmaniasis Leishmania donovani Bite of sand-fly (phlebotomus)
Flagellate Diarrhea Giardia lamblia Cyst contaminated food and water
(Giardiasis) Pyorrhea Entamoeba gingivalis Infected brushes, saline etc.

Helminths Diseases

Taeniasis Taenia solium (pork tapeworm) Raw under cooked measly pork
Ascariasis Ascaris lumbricoides Contaminated food and water
Filariasis (elephantiasis or elephant foot) Wuchereria bancrofi (filarial worm) Bite of Culex mosquito
Ancyclostomiasis Ancyclostoma duodenale Boring through the skin of feet

Insect Carrying Diseases

Mosquito (Anopheles) Malaria
Aedes aegypti Dengue fever
Rat flea Plague
Culex Filariasis or elephantiasis
Sand fly Kala – azar
Tse – tse fly Sleeping sickness
House fly Cholera

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