Theory:

Airborne disease caused by virus:
1. Disease: Common cold:
 
It is an infectious disease, that easily spreads from one person to another.
  
Causative organism: Rhinovirus (Other viruses that can cause cold include coronavirus, influenza and Adenovirus)
Mode of transmission: Droplet infection
 
Tissues/ Organs affected: Upper respiratory tract (Inflammation of nasal chamber).
 
Symptoms:
  • Fever
  • Cough
  • Running nose
  • Painful throat
  • Sneezing and headache
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Symptoms of common cold
 
Treatment: There's no specific medicine to cure a common cold, but lots of drugs are used to relieve the coughing, sneezing, and stuffiness that go with it.
 
2. Disease: Influenza:
It is generally known as flu, and it commonly occurs in children.
 
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Symptoms of influenza

Causative organism: Myxovirus
  
Mode of transmission: Droplet infection
  
Tissues/Organs affected: Respiratory tract (Inflammation of nasal mucosa, pharynx).
Symptoms:
  • Fever
  • Body pain
  • Cough
  • Sore throat
  • Nasal discharge
  • Respiratory congestion
Treatment: Antiviral drugs such as Oseltamivir, Zanamivir and Peramivir are used to treat Influenza disease.

3. Disease: Measles:
It is an infectious disease, and it is very quickly transferred from one infected person to another.
 
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Measles
 
Causative organism: Rubeola Virus
 
Mode of transmission: Droplet infection, droplet nuclei and direct contact with the infected person.
 
Tissue/Organ affected: Respiratory tract
 
Symptoms:
  • Eruption of small red spots or rashes in skin
  • Cough and sneezing
  • Redness of eye (Conjunctivitis)
  • Pneumonia
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Symptoms of measles
 
Treatment:
There is no specific treatment available for measles, but the condition usually improves within 7 to 10 days. Affected persons can recover from the disease by proper rest and diet.
 
4. Disease: Mumps:
It is a viral infection, which primarily affects saliva-producing glands that are located near the ears.
 
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Mumps
 
Causative organism: Myxovirus parotidis
  
Mode of transmission: Droplet infection, droplet nuclei and direct contact with the infected person.
 
Tissue/Organ affected: Upper respiratory tract.

Symptoms:
  • Fever
  • Headache
  • Sore throat
  • Enlargement of the parotid gland
  • Movement of the jaw becomes difficult 
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Symptoms of mumps
 
Treatment:
 
Vaccination is the best way to prevent mumps. We can prevent mumps with MMR vaccine. MMR vaccine protects against three diseases: Measles, mumps and rubella.
 
5. Disease: Chickenpox:
Chickenpox is an infectious disease caused by a virus, and it is most common among children and adults.
 
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Chickenpox: Varicella-zoster virus

Causative organism: Varicella Zoster virus
  
Mode of transmission: Droplet infection, droplet nuclei and direct contact with an infected person.
Tissue/Organ affected: Respiratory tract
  
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Symptoms of chicken pox
 
Symptoms:
  • Eruptions in the body and face (in the form of blisters or spots)
  • Fever
  • Uneasiness
Treatment:
The affected persons are isolated for a week until blisters are crusted. An antiviral drug such as acyclovir or valacyclovir is used to minimise the chickenpox symptoms in adults.