The Impact of Vaccination on COVID-19 Outcomes in Vietnam

Sample size: 3102 publication Evidence: high

Author Information

Author(s): Nguyen Ngoc-Lan Thi, Nguyen Hien Thi Thu, Le-Quy Vang, To Thu-Ba, Tran Huy Thinh, Nguyen Tuan Duc, Hoang Yen, Nguyen Anh-Thu, Dam Lan Thi Phuong, Nguyen Nhat-Linh, Dinh-Xuan Anh Tuan, Ta Thanh-Van

Primary Institution: Hanoi Medical University Hospital

Hypothesis

This study aimed to assess the effectiveness of the COVID-19 vaccine on the outcomes of patients in three hospitals in Vietnam.

Conclusion

Vaccination reduced mortality and both hospitalization length and disease severity in COVID-19 survivors, especially the older and patients with chronic comorbidities.

Supporting Evidence

The unvaccinated group had a higher proportion of severe conditions than the fully vaccinated group (12% vs. 3%).
48% of participants had at least one comorbidity.
The vaccinated groups had higher cured rates than the unvaccinated group (64.4%, 71.3%, and 67.7% for partially vaccinated, fully vaccinated, and boosted groups, respectively, vs. 56.8%).
Mean hospitalization duration was shorter in vaccinated groups compared to unvaccinated (8, 10, and 7 days for partially vaccinated, fully vaccinated, and boosted groups, respectively, vs. 11 days).
Age was identified as the most crucial predictor of critical illness, followed by vaccination status and comorbidities.

Takeaway

Getting vaccinated helps people who get COVID-19 get better faster and have fewer serious problems, especially older people and those with other health issues.