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NSW Covid: how to tell if you have Omicron or Delta

There’s a few key differences between the Omicron and Delta variants of Covid-19 including symptoms themselves. Find out how to tell which strain you may have caught.

Health officials consider cutting isolation period

There’s a few key differences between the Omicron and Delta variants of Covid-19 - but one symptom could help you figure out which one you’ve caught if you test positive.

Other than a PCR test and further genome sequencing, a scratchy throat could be a key sign you’re infected with the new mutant strain, The Sun reports.

Doctors have found Omicron-infected patients seem to present with a scratchy throat like they’ve been yelling or singing loudly, making their voices huskier or deeper than usual before they start feeling sick.

Having a scratchy throat could be a key sign you have the Omicron strain instead of Delta. Picture: AFP
Having a scratchy throat could be a key sign you have the Omicron strain instead of Delta. Picture: AFP

Delta-infected patients have a sore throat instead.

Private health insurer Discovery Health found a scratchy throat was the most common symptom Omicron patients experience, followed by nasal congestion, a dry cough and lower back pain.

Infectious diseases expert Professor Peter Collignon said the differing symptoms could prove that Omicron had a lower “virulence” than Delta.

“I can believe (the difference in symptoms), your throat may be more scratchy than sore, that may be a reflection of not as bad virulence or aggressiveness from the virus strain,” Professor Collignon said.

Health workers conduct COVID-19 tests at the Bondi Beach testing clinic. Picture: Jenny Evans
Health workers conduct COVID-19 tests at the Bondi Beach testing clinic. Picture: Jenny Evans

“Given they are respiratory tract infections, there will be a overlap in symptoms…but as more people catch it, a wider variety of symptoms then show.

“But the only way to know what you’ve got for sure is PCR testing.”

It comes as Omicron is “five times less severe” than the Delta strain, according to NSW Premier Dominic Perrottet, while early studies by The UK Health Security Agency have found people who catch the new strain are 70 per cent less likely to end up in hospital.

Professor Collignon stood by vaccination as the best way to protect yourself from any strain of the virus.

Health professionals working at the Covid-19 testing site at Leumeah. Picture: NCA NewsWire/Gaye Gerard
Health professionals working at the Covid-19 testing site at Leumeah. Picture: NCA NewsWire/Gaye Gerard

“It’s the best insurance you can get, most people who come to grief are those who aren’t vaccinated at all… the first two shots give you a 90 percent reduction in going to hospital, the third a 95 per cent reduction,” he said.

A scratchy throat is just one in a list of physical symptoms which may be able to tell you which variant you’re infected with. Here’s how to tell whether you’ve caught Omicron or Delta:

How Covid symptoms differ:

OMICRON SYMPTOMS

  • Scratchy throat or a hoarse, deeper voice
  • Runny nose/congestion
  • Headache
  • Dry cough
  • Fatigue
  • Sneezing
  • Lower back pain
  • Night sweats
  • Body aches

DELTA SYMPTOMS

  • Fever
  • Coughing
  • Sore throat
  • Shortness of breath
  • Runny nose or congestion
  • Headache
  • Fatigue
  • Muscle or joint pains
  • Nausea or loss of appetite
  • Diarrhoea or vomiting
  • Temporary loss of taste or smell 


Do you have Covid? We’d love to talk to hear about your experience. Email us at news@dailytelegraph.com.au

Read related topics:COVID NSW

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Original URL: https://www.dailytelegraph.com.au/coronavirus/nsw-covid-how-to-tell-if-you-have-omicron-or-delta/news-story/7a9fd7d64d3c5bf5de4c99de3eebccf8