FILE PHOTO: Corina Naujoks, member of a German Red Cross mobile vaccination team injects the Pfizer-BioNTech COVID-19 vaccine at an employee of a retirement nursery in Dillenburg, Germany, January 7, 2021. Photo: Reuters/Kai Pfaffenbach Vaccines are being rolled out to fight Covid-19, and while most are embracing the potential end of the global pandemic, conspiracy theorists are at it again making some wary. Now, there are some legitimate reasons to be cautious when it comes to the Covid-19 vaccines. It is true that most vaccines take a decade to develop as researchers test their longterm side effects, and clearly that was not possible in the case of the Covid-19 vaccines.