SARS-CoV-2 reinfection after previous infection and vaccine breakthrough infection through the second wave of pandemic in India: An observational study.

Background: There are sparse longitudinal data on SARS-CoV-2 infection after previous infection and after partial or full vaccination.

Methods: This study of a cohort of healthcare workers used Kaplan-Meier analysis with appropriate definition of events and censoring and used Cox models to assess outcomes, with data cut-off on June 18, 2021.

Results: A total of 1806 individuals with median age of 32 (18-64) years, 1483 (82.

Improved survival among oral cancer patients: findings from a retrospective study at a tertiary care cancer centre in rural Kerala, India.

Background: Oral cancer is very common in India. The reported 5-year survival of such patients is around 50% after treatment with surgery and radiotherapy, much lower than most of the developed countries.

Methods: A retrospective study of a prospective database of oral cancer patients undergoing surgery from June 2009 to June 2013 was conducted.