Riyazuddin M. Shaik

Doha, DA, Qatar

Last Updated: 09/26/2026

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Found 63 publications

Routine SARS-CoV-2 Testing Frequency and Risk of Severe COVID-19: A Nationwide Population-Based Study.

Routine SARS-CoV-2 Testing Frequency and Risk of Severe COVID-19: A Nationwide Population-Based Study.

Journal: International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases

Published: May 08, 2026

Routine SARS-CoV-2 testing frequency and risk of severe COVID-19: A nationwide population-based study.

Routine SARS-CoV-2 testing frequency and risk of severe COVID-19: A nationwide population-based study.

Journal: International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases

Published: May 08, 2026

Comparative effectiveness of one versus two doses of COVID-19 vaccines in Qatar: Evidence of converging protection over time.

Comparative effectiveness of one versus two doses of COVID-19 vaccines in Qatar: Evidence of converging protection over time.

Journal: Vaccine

Published: May 08, 2025

Effectiveness and durability of a fourth dose of ancestral-strain mRNA vaccines against SARS-CoV-2 infection: a nationwide matched cohort study in Qatar.

Effectiveness and durability of a fourth dose of ancestral-strain mRNA vaccines against SARS-CoV-2 infection: a nationwide matched cohort study in Qatar.

Journal: Scientific reports

Published: March 31, 2025

Effectiveness of ChAdOx1 nCoV-19 (Vaxzevria) primary series vaccine against SARS-CoV-2 beta and delta variants: a nationwide study.

Effectiveness of ChAdOx1 nCoV-19 (Vaxzevria) primary series vaccine against SARS-CoV-2 beta and delta variants: a nationwide study.

Journal: BMC infectious diseases

Published: March 29, 2025

Evaluating Hospital Admission Data as Indicators of COVID-19 Severity: A National Assessment in Qatar.

Evaluating Hospital Admission Data as Indicators of COVID-19 Severity: A National Assessment in Qatar.

Journal: Open forum infectious diseases

Published: November 17, 2024

Evaluating the cost-effectiveness of COVID-19 mRNA primary-series vaccination in Qatar: An integrated epidemiological and economic analysis.

Evaluating the cost-effectiveness of COVID-19 mRNA primary-series vaccination in Qatar: An integrated epidemiological and economic analysis.

Journal: PloS one

Published: October 01, 2024

Assessing healthy vaccinee effect in COVID-19 vaccine effectiveness studies: a national cohort study in Qatar.

Assessing healthy vaccinee effect in COVID-19 vaccine effectiveness studies: a national cohort study in Qatar.

Journal: eLife

Published: September 25, 2024

Protection conferred by SARS-CoV-2 infection across a spectrum of reinfection symptoms and severities.

Protection conferred by SARS-CoV-2 infection across a spectrum of reinfection symptoms and severities.

Journal: BMJ open respiratory research

Published: September 18, 2024

Immune histories and natural infection protection during the omicron era.

Immune histories and natural infection protection during the omicron era.

Journal: Communications medicine

Published: September 17, 2024

BNT162b2 Versus mRNA-1273 Vaccines: Comparative Analysis of Long-Term Protection Against SARS-CoV-2 Infection and Severe COVID-19 in Qatar.

BNT162b2 Versus mRNA-1273 Vaccines: Comparative Analysis of Long-Term Protection Against SARS-CoV-2 Infection and Severe COVID-19 in Qatar.

Journal: Influenza and other respiratory viruses

Published: April 21, 2024

Protection of natural infection against reinfection with SARS-CoV-2 JN.1 variant.

Protection of natural infection against reinfection with SARS-CoV-2 JN.1 variant.

Journal: Journal of travel medicine

Published: March 19, 2024

Showing 1-12 of 63

Last Updated: 09/26/2026