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Viral Infections

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Viral diseases are extremely widespread infections caused by viruses, a type of microorganism. There are many types of viruses that cause a wide variety of viral diseases. The most common type of viral disease is the common cold, which is caused by a viral infection of the upper respiratory tract (nose and throat). Other common viral diseases include:

  • Chickenpox
  • Flu (influenza)
  • Herpes
  • Human papillomavirus (HPV)
  • Infectious mononucleosis
  • Mumps, measles and rubella
  • Shingles
  • Viral gastroenteritis (stomach flu)
  • Viral hepatitis
  • Viral meningitis
  • Viral pneumonia

Symptoms of viral diseases can include:

  • Flu-like symptoms (fatigue, fever, sore throat, headache, cough, aches and pains)
  • Gastrointestinal disturbances, such as diarrhea, nausea and vomiting
  • Irritability
  • Malaise (general ill feeling)
  • Rash
  • Sneezing
  • Stuffy nose, nasal congestion, runny nose, or postnasal drip
  • Swollen lymph nodes
  • Swollen tonsils
  • Unexplained weight loss

Causes -

  • Viruses are a type of infectious agent that is very small. They invade and multiply throughout your body's cells.
  • Viral sickness can be caused due to various viruses, including cold and flu viruses.
  • Food and drinks may be contaminated with deadly viruses.
  • Due to low immunity babies and children have a high risk of getting infected with viral infections.