Yes, you may still contract coronavirus if you are vaccinated. Though the available vaccinations are incredibly effective, breakthrough infections are possible. Breakthrough infections have shown to be much less severe than in those who have contracted COVID-19 without being vaccinated. Increased risk factors such as pre-existing conditions like cardiovascular disease or autoimmune disorders will make a breakthrough infection more likely.   Though these infections are not common, there has been an increased prevalence of COVID-19 cases in vaccinated people due to the reduction of other adequate precautions, like mask mandates and social distancing. While vaccines work to lessen transmission, virulence is not entirely diminished.