Original question: "Which vaccine brand do you trust the most?"
ASEAN stands for Association of Southeast Asian Nations and is a political and economic union composed of the ten member states Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, Philippines, Singapore, Thailand, and Vietnam.
On their calculation methodology for ASEAN average figures, the source states the following:
We decided to apply a different methodology this year assigning a 10% weighted average to each country’s responses to calculate the average figures for ASEAN as a whole. This is to ensure that the responses of each country are represented by equal proportion, given that ASEAN’s decision-making processes are based on each country having equal say, regardless of country or population size.
Respondent share by nationality:
Brunei: n = 3.2%
Cambodia: n = 4.8%
Indonesia: n = 7.8%
Laos: n = 2.6%
Malaysia: n = 8.1%
Myanmar: n = 20.9%
Philippines: n = 23.9%
Singapore: n = 13.2%
Thailand: n = 7%
Vietnam: n = 8.6%
In a survey conducted among Southeast Asians in November and December 2021, close to ** percent of respondents chose Pfizer and Moderna as the coronavirus (COVID-19) vaccine manufacturers they trust the most. Approximately ** percent of respondents stated they trusted any vaccine available.
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ISEAS. (February 16, 2022). Most trusted coronavirus (COVID-19) vaccine brands in Southeast Asia in 2021 [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 29, 2026, from /statistics/1292678/asean-most-trusted-covid-vaccine-brands/
ISEAS. "Most trusted coronavirus (COVID-19) vaccine brands in Southeast Asia in 2021." Chart. February 16, 2022. ÌÇÐÄÆÆ½â°æ. Accessed July 29, 2026. /statistics/1292678/asean-most-trusted-covid-vaccine-brands/
ISEAS. (2022). Most trusted coronavirus (COVID-19) vaccine brands in Southeast Asia in 2021. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 29, 2026. /statistics/1292678/asean-most-trusted-covid-vaccine-brands/
ISEAS. "Most Trusted Coronavirus (Covid-19) Vaccine Brands in Southeast Asia in 2021." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 16 Feb 2022, /statistics/1292678/asean-most-trusted-covid-vaccine-brands/
ISEAS, Most trusted coronavirus (COVID-19) vaccine brands in Southeast Asia in 2021 ÌÇÐÄÆÆ½â°æ, /statistics/1292678/asean-most-trusted-covid-vaccine-brands/ (last visited July 29, 2026)
Most trusted coronavirus (COVID-19) vaccine brands in Southeast Asia in 2021 [Graph], ISEAS, February 16, 2022. [Online]. Available: /statistics/1292678/asean-most-trusted-covid-vaccine-brands/