Trump's America

The administration of United States President Donald Trump has said it will not work with an international cooperative effort to develop and distribute a COVID-19 vaccine, because it does not want to be constrained by multilateral groups like the World Health Organization (WHO).

[...]

Some nations have worked directly to secure vaccine supplies, but others are pooling efforts to ensure success against a disease that has no geographical boundaries. More than 150 countries are setting up the COVID-19 Vaccines Global Access Facility, or COVAX.

[...]

The US-based biotechnology company Moderna is in the third phase of trials for its vaccine, meaning the vaccine has been approved for early or limited use - the last step before being made available to the market.

The final trial of the government-funded vaccine will involve about 30,000 individuals, but it is unclear when that phase will be concluded.

  alJazeera

...but hey, do what you want...you will anyway.