[2] The Government of Sri Lanka commenced its COVID-19 vaccination program under the COVAX facility with first batch of Oxford–AstraZeneca vaccines arrive in Sri Lanka on 28 January 2021 from the Serum Institute of India.

[3] By April, with a surge in COVID cases in a third wave of infections, Sri Lanka faced a severe shortage of the Astra-Zeneca vaccine due to an export ban by India.

[5] Sri Lanka faced an shortage of Sputnik V vaccine due to a spike of cases in Russia resulting in the manufacturer Gamaleya Research Institute of Epidemiology and Microbiology, focusing on meeting local demand.

[11] On 27 May State Minister for Pharmaceuticals Channa Jayasumana told reporters Sri Lanka was considering co-production of CoronaVac.

It was not clarified if it would handle full production or a fill and finish plant.