Comparative Effectiveness of mRNA and Inactivated Whole Virus Vaccines against COVID-19 Infection and Severe Disease in Singapore by Premikha M, Calvin J. Chiew, Wycliffe E. Wei, Yee-Sin Leo, Benjamin Ong, David Chien Lye, Vernon J. Lee, Kelvin Bryan Tan :: SSRN

We compared the incidence rates of COVID-19 infection and severe disease among adults who had received two doses of Pfizer-BioNTech/Comirnaty, Moderna, Sinovac-

…After adjusting for age, gender, ethnicity, socioeconomic status, time since second dose and daily infection rate, individuals vaccinated with Sinovac-CoronaVac were more likely to be infected (adjusted IRR 2.99; 95% CI 2.89 – 3.10), and more likely to develop severe disease (adjusted IRR 4.80; 95% CI 3.41 – 6.74); individuals vaccinated with Sinopharm were also at higher risk of infection (adjusted IRR 1.63; 95% CI 1.43 – 1.85), while individuals  vaccinated with Moderna were at lower risk of severe disease (adjusted IRR 0.45; 95% CI 0.27 87 – 0.74), compared with those who received Pfizer-BioNTech/Comirnaty (Table 1)…

Source: Comparative Effectiveness of mRNA and Inactivated Whole Virus Vaccines against COVID-19 Infection and Severe Disease in Singapore by Premikha M, Calvin J. Chiew, Wycliffe E. Wei, Yee-Sin Leo, Benjamin Ong, David Chien Lye, Vernon J. Lee, Kelvin Bryan Tan :: SSRN