According to state immunization data, the number of people in Wisconsin who received a COVID-19 vaccine in September is down about 33 percent compared to last year.
Researchers have long known from clinical trials that the COVID-19 vaccine protects individuals against severe illness. But they did not know whether the vaccine also reduces the spread of the disease. Until now.
In a forthcoming study, a University of Wisconsin-Madison economist analyzed data from the pandemic and found real-world evidence that the COVID-19 vaccine actually reduces the spread of the disease between vaccinated people and their close contacts…