With this past week's shipments, total US vaccine donations to date are nearing 2.5 million in Tajikistan and over 300,000 in Kyrgyzstan.
The latest delivery on December 6 builds on more than 5.3 million doses of vaccines the United States has delivered to Uzbekistan in several shipments since July.
The US government is donating vaccines to Tajikistan and allocating additional funds for COVID-19 response and recovery in Uzbekistan.
Unmoved by record numbers of COVID-19 deaths, Russians remain suspicious of the Sputnik V vaccine because they say they have no trust in the government behind it.
The United States is donating 1.1 billion COVID-19 vaccines worldwide -- of which it has already delivered more than 200 million doses.
Tajikistan soon will have eight 258-liter Ultra Cold Chain freezers to store the Pfizer vaccines. This is the first time Tajikistan will be using that technology.
The donation comes on top of 3 million doses of Moderna vaccine delivered in July. Worldwide, the United States has delivered more than 140 million COVID-19 vaccines.
The US embassy donated the equipment on behalf of the US Department of Defence and US Central Command.
The donation comes after Tajikistan received 1.5 million doses of US vaccines earlier this week as new variants of the virus are spreading.
As the United States donates 2 million vaccine doses to Tajikistan and Georgia, Beijing continues to resist WHO probe into COVID-19 origins.