What are the most common symptoms of COVID subvariants?

What are the most common symptoms of COVID subvariants?


The virus causing COVID has evolved over the past few months, affecting people who have contracted it in different ways.  

If initially the Delta caused a loss of smell, taste, fever and breathing difficulties, the picture is completely different with the new variants of COVID, particularly Omicron which hit very hard during the last holiday season.

According to data compiled by the Zoe Health data app, which allows users to submit their medical data for research purposes, sore throat and hoarse voice are the main symptoms related to Omicron and to subvariants of COVID.

These symptoms were not as prevalent with Delta and seem to affect both vaccinated and unvaccinated people equally.

Additionally, people with Omicron are less likely to be hospitalized, and their symptoms last for a shorter time, averaging 6.87 days for Omicron, compared to 8.89 days for Delta. 

< p>Other widespread serious symptoms such as fever, headache, feeling foggy and eye pain are less common with Omicron. However, they can still occur.

The study, which was supported by grants from the UK government's Department of Health and Social Care, involved people in the UK who had been vaccinated. Participants were tested between June 1 and November 27, 2021, when the Delta variant was dominant, and between December 20, 2021 and January 17, 2022 when Omicron took over. 

In addition to a difference in the duration and types of symptoms between the two variants, the researchers said that Omicron is found much less frequently in the lower respiratory tract. This is where the infection can cause more severe symptoms, potentially sending people to the hospital.

They also found that symptoms of Omicron did not last as long in vaccinated people .

BA.4 and BA.5 cause loss of smell

The Omicron sub-variant that was prevalent in late 2021 and early 2022 was labeled BA.1. There are now subvariants labeled BA.4 and BA.5, which again appear to cause loss of smell or taste, Dr. Celine Gounder told CBS News.

Although it seems confirmed that newer variants like Omicron are “milder”, the BA.2 subvariant of Omicron was associated with more symptoms and greater disruption of daily activities than BA.1.

New research should make it possible to draw a more precise portrait of the BA.4 and BA.5 variants which are almost currently dominant in Quebec.