A new study by Mayo Clinic and Nference Inc. researchers suggests that prior childhood and adult vaccinations for illnesses such as polio, measles and flu may provide protection against COVID-19 infection. The study, which analyzed patient data using Nference artificial intelligence (AI) software, underscores the critical role immunizations play in curbing the spread of diseases and preventing future pandemics. “What we discovered represents compelling evidence that vaccinations are a critical element in prevention of disease, even diseases one doesn’t anticipate,” said Venky Soundararajan, co-founder and chief scientific officer of the Cambridge, Mass.-based company.