An individual with influenza infection faces severe weakness owing to an increase in the expression of muscle-degrading genes and a decrease in expression of muscle-building genes in skeletal muscles, a study has concluded. It is well-known that muscle aches and weakness are prominent symptoms of influenza infection. However, the cause of weakness in the body is primarily created by these muscle-degrading genes. Researchers at the University of Connecticut noted that every year, 5 to 20 per cent of the people in the United States are infected with influenza virus.

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