Tea has not been found to have a preventive effect against novel coronavirus pneumonia. Although there are some research institutions with tea to do in vitro virus inhibition test, found that tea has a certain inhibitory effect on the virus, but only for in vitro tests, not in humans found the effect. If you have been infected with the new coronavirus pneumonia, whether it is drinking tea, drinking coffee, can not achieve the effect of killing the virus. Improving immunity helps to fight the virus, but it is also controversial whether drinking tea can improve immunity. If after infection with a respiratory viral agent, drinking more water can reduce the stickiness of respiratory secretions and help relieve cough symptoms. If you feel that your sputum is sticky and you have difficulty coughing up sputum, whether you drink water, tea, milk or juice, you can achieve the goal of reducing the stickiness of sputum, which can relieve the symptoms. Drinking tea does not have the effect of preventing the new coronavirus. Content source: Dr. You Lai