"The Role of Reinfection in Sars-CoV-2 Spread"

Reinfection with SARS-CoV-2 occurs when someone who previously recovered from the virus becomes infected again. This can influence the spread of COVID-19 by adding new sources of infection to the population, especially if immunity wanes over time or if different virus variants bypass existing defenses. Understanding reinfection helps officials determine how long immunity lasts and whether boosters or new vaccines are needed. While reinfections are generally less severe, they highlight the importance of ongoing precautions, vaccination, and surveillance to control the pandemic effectively.