Young people are no less prone to being infected by the coronavirus than adults. Although they usually are not as badly affected, if they get the disease, they could spread it to others. Suggestions by health officials that Hong Kong’s Covid-19 vaccination programme be extended to those aged from 12 to 15 therefore would seem worth exploring. But as with all decisions involving the pandemic, science has to be the basis to ensure safety and effectiveness. Currently, to have the BioNTech vaccine you must be at least 16 and 18 for that by Sinovac. But Singapore, the United States, Canada and the United Arab Emirates recently reduced the immunisation age to 12 for those getting the BioNTech jab. Such moves, and the start of the new school year in September with face-to-face classes, are seen by some experts as an opportunity to widen community vaccination efforts. It has added appeal given that vaccination rates in the city remain relatively low, with safety and the seeming lack of an outbreak being among reasons given for reluctance to get a jab. Hong Kong is facing added pressure with the last delivery of BioNTech vaccines expected in September. Clinical data is being sought from BioNTech, and scientists will be tasked with studying the efficacy and safety of giving children a jab. The University of Hong Kong intends to carry out trials with secondary school students, and is recruiting 125 for tests involving each of the two vaccines available in the city. Findings will be passed on to the government’s vaccination advisory committee, which will determine whether there is merit in the idea. Covid-19 rules for Hong Kong schools ‘should be tied to pupil vaccination rates’ Children rarely get seriously ill from the coronavirus and those that do usually have underlying health problems such as obesity, diabetes or weakened immune systems. Vaccination would offer protection. Inoculation could also provide peace of mind to parents and teenagers alike as a measure of normality returns with school classes and sports and fitness activities. Importantly, it also gives the chance to widen the pool of people able to be vaccinated so that the city can move closer to the goal of attaining herd immunity. With science at the fore to ensure safety, Hong Kong would have a greater possibility of reaching that target.