Myxovirus a group of viruses including those causing influenza and Paramyxoviridae, members of which can cause the common cold, mumps, and measles in humans, canine distemper, rinderpest in cattle, and Newcastle disease in fowl.

Explanation:
Influenza is a highly contagious respiratory illness caused by the influenza virus. The virus belongs to the family Orthomyxoviridae and is classified into three types: influenza A, B, and C. Among these, influenza A and B are the most common viruses that cause seasonal flu epidemics.

Cause:
The cause of influenza is the influenza virus, which is a RNA virus belonging to the family Orthomyxoviridae. There are four subtypes of influenza viruses: A, B, C, and D. Influenza A and B are the most common types that cause seasonal flu epidemics.

Myxovirus:
Influenza virus is a myxovirus, a type of virus that has a lipid envelope surrounding its nucleocapsid. The virus has two main surface proteins called hemagglutinin (HA) and neuraminidase (NA) that help the virus infect and spread among human populations.

Symptoms:
The symptoms of influenza include fever, cough, sore throat, muscle aches, headache, and fatigue. In severe cases, influenza can lead to pneumonia, respiratory failure, and death.

Prevention and Treatment:
Prevention of influenza involves getting an annual flu vaccine, avoiding close contact with sick people, and washing hands frequently. Treatment of influenza includes antiviral medications such as oseltamivir and zanamivir, which can reduce the severity and duration of symptoms if given within 48 hours of symptom onset.

Conclusion:
Influenza is a highly contagious respiratory illness caused by the influenza virus. The virus belongs to the family Orthomyxoviridae and is classified into three types: influenza A, B, and C. The symptoms of influenza include fever, cough, sore throat, muscle aches, headache, and fatigue. Prevention of influenza involves getting an annual flu vaccine, avoiding close contact with sick people, and washing hands frequently. Treatment of influenza includes antiviral medications such as oseltamivir and zanamivir.

Myxovirus is defined as the any of a group of medium-sized, RNA-containing viruses having a helical envelope, infectious to humans.....