Dr Anthony Fauci, the US top infectious disease expert, speaking on ABC's “This Week” on Sunday, said he doesn't foresee more lockdowns in the nation, but warned that the situation surrounding the coronavirus pandemic will continue to get worse because so many Americans are still unvaccinated.

Fauci is warning of “some pain and suffering in the future” as coronavirus cases continue to rise.

While this week the US saw a surge in Americans getting the shot, as coronavirus cases rise driven largely by the more infectious delta variant, still only about 60 per cent of Americans are fully vaccinated.

Fauci argued that the unvaccinated are affecting others because they're “allowing the propagation and the spread of the outbreak,” and pushed back against critics who say whether to get the shot is an individual decision.

Fauci said that those who choose not to get vaccinated are actually impacting the rights of Americans particularly prone to infection because they're “encroaching on their individual rights” by “making them vulnerable.”