Viruses are unicellular organisms with genetic material, DNA or RNA, that are surrounded by a coat made of protein. A viral infection is the proliferation of a harmful virus within the body. Symptoms of the viral illness are due to tissue damage and the associated immune response of the host. Respiratory viral infections: Respiratory viral infections affect the nose, lungs, and airway. They spread by inhalation of droplets containing virus particles. Frequent hand-washing, covering your nose and mouth while coughing or sneezing, and avoiding contact with infected people helps prevent the spread of respiratory infections. Please contact us for additional information! 9891517570.