Innovations in vaccine development: what next?

COVID-19 pandemic has affected the whole world in a way that is unprecedented. The origin of the SARS-CoV-2 and the true scale of number of cases and deaths in every country is debatable. Nevertheless, it is clear that the spread of the virus is continuing worldwide with a devastating effect on the global economy. The control of the pandemic was essentially by implementing strict measures such as social distancing, use of personal protective equipment, personal hygiene and sanitation. There were numerous occasions since the beginning of the pandemic when governments across the world had rejoiced that their measures to control the spread of the infections had worked. However, non-compliance of safety measures and new strains of the virus led to the rise of the next wave of infections.