Reinfected Patients

Reinfected patients are individuals who have recovered from an illness, such as COVID-19, but later become sick again with the same disease. This can happen if the immune system's protection weakens over time or if the virus changes enough to bypass previous immunity. Reinfections are generally less severe, but they highlight that recovering once does not always guarantee permanent immunity. Understanding reinfections helps researchers improve vaccines and public health strategies to better prevent repeat illnesses and control the spread of disease.