Days 1 to 3: 1. Symptoms almost similar to a common cold. 2. Slight sore throat. 3. No fever, no tiredness, normal appetite. Day 4: 1. Slight sore throat, body ache. 2. Hoarse voice. 3. Body temperature around 36.50C. 4. Slight loss in appetite. 5. Slight headache. 6. Minor diarrhea or indigestion. Day 5: 1. Sore throat, hoarse voice. 2. Slight fever, between 36.5 to 36.70C 3. Body weak body, joint pain. Day 6: 1. Slight fever, around 37 ° C. 2. Cough accompanied by mucus or dry cough. 3. Sore throat when eating, talking or swallowing. 4. Fatigue, nausea. 5. Occasional breathing difficulty. 6. Pain in fingers 7. Diarrhea, vomit. Day 7: 1. Fever higher, between 37.4- 37.80C. 2. Cough with sputum. 3. Body ache and headache. 4. Diarrhea more severe. 5. Vomit. Day 8: 1. Fever between 38°C or higher. 2. Breathing difficulties, chest heavy. 3. Cough continuously. 4. Headache, joint pain and hip pain. Day 9: 1. Symptoms worsen. 2. Fever higher. 3. Cough more persistent, more severe. 4. Breathing difficult and laborious. At this time, blood tests and X-ray examinations of the lungs are required. NB: Wear a mask, pay attention to hygiene, wash hands diligently, avoid crowds, cancel trips.