evidence: "Vaccinated people can become infected with COVID-19 and spread it to others. However, a 2023 study found that vaccinated people were significantly less likely to transmit the virus," said Brian Laird, PharmD, a manager in Pharmacy Operations at OSF HealthCare. [...] Vaccinated individuals have a lower viral load if they get infected. But they still can pass it on to someone else, Brian said. [...] So can vaccinated people spread COVID to a friend or family member who is not vaccinated? It can happen.