Thelansis

  Severe acute respiratory syndrome (SARS) is a human viral respiratory disease caused by the SARS coronavirus (SARS-CoV). The virus is a member of the coronavirus family, characterized by its crown-like glycoprotein spikes and large single-stranded RNA structure. SARS-CoV is thought to have originated from an animal reservoir in the horseshoe bat and transmitted to humans through an intermediate host in the palm civet. SARS presents a severe form of pneumonia and typically begins with flu-like symptoms, including fever, fatigue, headache, chills, muscle pain, loss of appetite, and diarrhea after an incubation period of 2-10 days. SARS-CoV uses the angiotensin-converting enzyme 2 (ACE2) receptor to enter the host and concentrate in the lungs and small intestine, areas with high receptor density. The infection leads to lung injury and serous pleural effusions and may result in secondary bacterial, viral, or fungal infections. Other causes of community-acquired pneumonia and ARDS m...