The number of novel coronavirus cases in the US surged past 1,000 on Tuesday, after public health experts criticised authorities for downplaying the epidemic and lagging behind in testing efforts.
At least 28 people have died and 1,025 people have been infected, according to a running tally by Johns Hopkins University -- nearly double the 550 total confirmed cases the day before.
The rise is linked to an expansion in testing as the bulk of diagnoses have shifted from federal to state laboratories.
Epidemiologists have said faulty test kits coupled with a diagnostic strategy that initially targeted too few people allowed the disease to spread beyond US authorities' ability to detect it.
The failings had contributed to the virus taking root across the country, academics from Johns Hopkins University and Stanford University wrote in the Journal of the American Medical Association (JAMA) on Monday.
Vice President Mike Pence defended the government's response at a White House briefing and said that ‘a million tests are in the field.’ He said that more would be added as the government partnered with private companies.
Just over 8,500 tests had been performed as of Monday, according to the latest figures from the Centers for Disease Control and Prevention (CDC).
South Korea announced its first case on the same day as the United States, has tested more than 189,000 people in the same period, Business Insider reported.
The JAMA report authors wrote that the only test initially authorized was one developed by the CDC.
It relied on the same technology as one authorized by the World Health Organization (WHO) and deployed around the world -- except that a fault meant the CDC kit was returning inconclusive results.
It was not until February 29, the date of the first US death and more than a month after the first confirmed US case, that the Food and Drug Administration lifted a ban on state labouratories developing their own kits based on the WHO's tests.
- 'Don't overcorrect' -
‘Adopting broader testing criteria and allowing use of a wider range of tests would have been helpful in identifying the first US cases and containing the spread,’ said Michelle Mello of Stanford, a co-author of the JAMA report.
‘Manufacturing problems like the one that arose with CDC's test are always a risk, but the fact that CDC put all its eggs in that one basket made the manufacturing snafu highly consequential,’ she wrote on her university's blog page.
The CDC was initially only testing people with known exposure, meaning a Californian patient on a ventilator was denied the test for five days, the patient's doctors said. The criteria were changed as a result of this case.
Mello also pointed to several inaccuracies in White House communications on the epidemic -- from declaring that containment efforts were ‘close to airtight’ to claiming a vaccine could be ready within three to four months.
‘The public messaging from Washington about the seriousness of the problem has been neither consistent nor accurate, and I worry it may have led Americans to take fewer steps to prevent community transmission than we should have,’ she said.
The authors argued against overcorrection, however, saying that health services would be quickly overwhelmed if everyone with a cough or fever -- or exposure to sick patients -- demanded a test.
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