To the Editor, Hong Kong citizens and anxious parents are astonished by the news that over 80 deaths have been reported following influenza immunizations in Korea, while some adverse events were also brought to the public's attention in Taiwan. 1 In Korea, the vaccine providers are believed to include domestic firms such as GC Pharma, SK Bioscience, Korea Vaccine, and Boryung Biopharma Co Ltd, a unit of Boryung Pharm Co Ltd, along with Sanofi which is headquartered in France. 2 The reports raised yet further concerns amongst the general public after the Singapore Ministry of Health advised temporary cessation for the use of two vaccines, one of which is used in Hong Kong. This episode could become an international crisis as the annual winter surge of influenza is just around the corner and raise serious public concerns. We analyze and search the literature to provide some facts which can help address these questions and further discuss the role of vaccination in combating influenza and COVID-19 from a public health perspective.