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ZURICH (Reuters) - Vaccines from AstraZeneca, Russia's Gamaleya Institute and Johnson & Johnson fight the coronavirus with another virus, leaving scientists concerned the shots may lose potency if annual inoculations become necessary to fight new variants. So-called viral vector shots - also used by several Chinese COVID-19 vaccine developers - use harmless modified viruses as vehicles, or vectors, to carry genetic information that helps the body build immunity against future infections. However, there is a risk that the body also develops immunity to the vector itself, recognising it as an intruder and trying to destroy it.
LONDON/CHICAGO (Reuters) - Britain and other nations are considering ways to stretch scarce supplies of COVID-19 vaccines, including by delaying second doses, reducing dose sizes and switching vaccine types between the first and second shots.
LONDON (Reuters) - Russia's plan to roll-out its "Sputnik-V" COVID-19 vaccine even before full trials show how well it works is prompting concern among virus experts, who warn a partially effective shot may encourage the novel coronavirus to mutate.
MOSCOW (Reuters) - Mass testing of Russia's first potential COVID-19 vaccine to get domestic regulatory approval will involve more than 40,000 people and will be overseen by a foreign research body when it starts next week, backers of the project said on Thursday.
China was the first country to suffer the novel coronavirus attack, but this does not mean it should be held responsible for the pandemic.
Princess Dina Mired of Jordan, president-elect of the Union for International Cancer Control, is determined to push for equity in cancer control worldwide.