LONDON, May 29: Chinese scientists have developed the first vaccine to protect children against a virus called enterovirus 71, or EV71, that causes the common and sometimes deadly hand, foot and mouth disease. The new inactivated EV71 vaccine, made by Beijing Vigoo Biological, was developed for use in the Asia-Pacific region, which accounts for most of the serious cases of the disease that can cause potentially fatal meningitis and encephalitis. (agencies)