Safety and Considerations of the COVID-19 Vaccine Massive Deployment

摘要

Emerging and re-emerging infectious diseases represent a significant and growing cause of morbidity and mortality.Since vaccination campaigns were carried out,several infectious diseases have been controlled successfully,such as smallpox and poliomyelitis,making vaccination one of the most reliable and cost-effective public health interventions.In the long run,vaccine coverage,whether high or low,has been shown to yield important public health benefits(Weycker et al.2005).Therefore,vaccines play an important role in increasing population immunity,preventing severe infectious diseases。