**3. Various organ involvement in COVID-19**

Various organ and systems are involved in COVID-19 infection. Lung can be entry site, can cause atypical pneumonia and may results in ARDS. Liver, Kidney, Blood, Heart, Brain, Endocrine glands, Gastro-intestinal tract, and Skin are involved which is discussed in sections 4 to 11 of this chapter. **Table 2** summarizes manifestations of various organ involvement and their surrogate markers.
