A positive ev71 is not necessarily HFMD. HFMD is a disease caused by enterovirus infection, which is contagious, and enterovirus ev71 infection is its main causative factor. However, being positive for enterovirus ev71 only means that you are infected with enterovirus ev71, not necessarily HFMD. This is because infection with enterovirus ev71 does not necessarily mean that HFMD will strike. If ev71 is found to be positive in serologic testing, it is recommended that some antiviral drugs, such as acyclovir, ribavirin, and buspirone anti-inflammatory oral solution, be taken appropriately under the guidance of a healthcare professional to prevent the occurrence of HFMD. At the same time, we should also pay attention to observe the changes of the condition, do the temperature test, and once abnormalities are found, we should go to the regular hospital for consultation and examination in a timely manner. Usually drink more plain water, speed up the body metabolism, can promote the discharge of toxins in the body.