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But as yet, there’s hardly any evidence for the effectiveness of these checkers for prioritising – or triaging – patients for treatment during a pandemic, say researchers.The report, published in BMJ Health & Care Informatics, suggested digital Covid-19 ‘symptom checkers’ may stop some patients from getting prompt treatment for serious illness.
Researchers studied the efficacy of national government-sponsored digital symptom checkers used in Singapore, Japan, the US and the UK to triage people in need of a medical assessment and/or treatment correctly.
Both the US and UK symptom checkers “consistently failed to identify” the symptoms of severe Covid-19, as well as bacterial pneumonia and sepsis, frequently advising those with serious cases to stay home, the findings indicated.
However, NHS Digital says the symptoms checker is “not a diagnostic tool” and has been updated since the study took place.
Researchers looked at four trackers including: the Singapore Covid-19 Symptom Checker; Stop Covid-19 Symptom Checker (Japan); CDC Coronavirus Symptom Checker (US); and 111 Covid-19 Symptom Checker (UK).
Covid-19 death rates in Singapore and Japan are comparatively low compared to the US and the UK.
The study was designed to see if symptom checkers were able to differentiate mild cases of Covid-19 from severe ones – and how well they picked up Covid-19 ‘mimickers’, such as bacterial pneumonia and sepsis in 52 case scenarios.
