Americans have a sick feeling about Hillary Clinton’s health.

Seventy-nine percent of voters have heard a lot or some about the Democratic presidential nominee’s health woes, according to a Morning Consult poll, which was taken after her caught-on-camera collapse during a 9/11 ceremony.

And 41 percent say her health is below average or very poor, compared to only 26 percent who said that in August. A plurality, 28 percent, rank her health as average. Last month, it was 30 percent.

A little more than 2 in 10 (22 percent) say Clinton’s health is above average or excellent — down from 29 percent from a national poll in August.

Meanwhile, views on Donald Trump’s health have hardly changed, with 36 percent saying it’s above average or excellent compared to 33 percent in late August.

The GOP nominee, who has bragged about downing fast food, recently presented a cursory, grammatically challenged doctor’s note attesting to his “extraordinary” strength and stamina.

There are significant partisan differences in opinions in the poll, with seven in 10 (68 percent of) Republicans saying Clinton’s health was below average or very poor, compared with 16 percent of Democrats.

Less than half of voters (44 percent) said Clinton’s health would negatively affect her ability to serve — including 23 percent of Democrats, 69 percent of Republicans and 44 percent of independents.

Forty-three percent said her health concerns would not affect her ability, while 13 percent said they didn’t know or didn’t have an opinion.

Clinton was recorded collapsing and being assisted while entering a Secret Service vehicle, which rushed her to daughter Chelsea Clinton’s apartment before it was disclosed that the candidate had been diagnosed with pneumonia two days earlier.

The incident, which Clinton’s staff initially blamed on overheating, has done little to change voters’ minds about her trustworthiness.

Fifty percent of respondents said she has given false information about her health to the public. Only 37 percent said the same for Donald Trump, who has repeatedly questioned her physical ability to be commander in chief.

Only 29 percent said Clinton has given accurate information about her health to the public, compared to 38 percent for Trump.

The survey polled 1,501 registered voters from Sept. 12 to 13 and had a margin of error of plus or minus 3 percentage points.