Post-Vaccination COVID-19 Infection and Its Correlates among Residents of Chandra, Gazipur, Bangladesh: A Cross-Sectional Study

In Chandra, Kaliakair, Gazipur, Bangladesh, 41.3% of vaccinated adults reported post-vaccination COVID-19 infection, mostly mild, with only 9.7% requiring hospitalization.

• Why it matters: Even with vaccines, breakthrough infections persist and community-level correlates are needed to target prevention and booster strategies in Bangladesh.
• What they did: A community-based cross-sectional survey (March 2021–December 2022) interviewed 300 adults (≥18) with at least one vaccine dose, using chi-square tests and multivariable binary logistic regression (p<0.05).
• The result: Rural residence (aOR 4.87), poor mask use (aOR 2.28), poor physical distancing (aOR 2.74), poor hand hygiene (aOR 3.61), and diabetes (aOR 4.46) were linked to higher odds, while booster receipt was protective (aOR 0.23).

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