COVID-19 Vaccine Effectiveness Analysis

Patients who received at least one dose of the COVID-19 vaccine were classified as “vaccinated”, and those who did not complete the vaccination schedule were classified as “partially vaccinated”. Patients were categorized as “fully vaccinated” if they have received the required dose(s) of a COVID-19 vaccine at least 14 days from the single-dose vaccine or the second dose in the two-doses vaccines. The partially or unvaccinated patients were categorized as “not fully vaccinated” group. Patients who acquire SARS-CoV-2 infection after being fully vaccinated are termed “patients with VBT”.

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Kandeel A., Fahim M., Deghedy O., Alim W., Fattah M.A., Afifi S., Mohsen A, & Abdelghaffar K. (2023). Clinical features and severe outcome predictors of COVID-19 vaccine breakthrough infection among hospitalized patients: results from Egypt severe acute respiratory infections sentinel surveillance, 2021–2022. BMC Infectious Diseases, 23, 130.

Publication 2023

Covid 19 vaccine Patients Sars cov 2 infection Second vaccines Vaccination schedule Vaccine

Corresponding Organization :

Other organizations : Ministry of Health and Population, National Water Research Center

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Variable analysis

independent variables

Vaccination status
Completion of vaccination schedule

dependent variables

SARS-CoV-2 infection in fully vaccinated patients (patients with VBT)

control variables

Time elapsed since completion of vaccination schedule (at least 14 days)

Annotations

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