The United States kicked off a mass Covid-19 vaccination drive early this week administering the Pfizer Inc and BioNTech’s coronavirus vaccine shots to healthcare workers and elderly citizens. Including the US a few countries have approved the Pfizer’s vaccine which is claimed to be 95% effective in preventing the viral infection. But two health workers at Bartlett Regional Hospital in Juneau experienced allergic reactions — one severe one mild — about 10 minutes after receiving the vaccine. One received the vaccine Tuesday while the other was vaccinated on Wednesday. Both were treated and have fully recovered according to the latest