An Egyptian Member of the AstraZeneca vaccine research team in Oxford Ahmed Salman said on Sunday that the Chinese vaccines may require taking a third dose to increase its effectiveness. He also explained that while taking two doses of different vaccines should pose no problems, it may lead to stronger side-effects. Salman said that as coronavirus vaccines are available medical products, every country has the right to choose which ones to use. Companies working on different vaccines gave published the results of their experiments a short time ago, so all things are clear in building vaccine policies, he assured. Statistics on vaccine activities, symptoms and all other information have been presented, as this information allows countries to choose a suitable vaccine.
