China has imposed strict new lockdown measures in Shanghai as the country ramps up its efforts to see off a new round of coronavirus infections after they returned to a two-year high in May.
The Asian superpower has taken some of the most drastic measures since the start of the pandemic in recent weeks, even though its caseload is low compared with other major countries because it has tethered itself to an uncompromising “zero-Covid” strategy.
The latest increase in cases is thought to be due to Omicron, reported to be the dominant variant, which blighted the UK over Christmas and the New Year.
First detected in southern Africa in November 2021, swiftly spread across the globe last December, proving its more readily transmissable but less severe than its parent sttain.
Here, we take a look at some of the most common symptoms associated with the variant for the fully vaccinated – and two early warning signs you might have it.
Most common symptoms for the fully vaccinated
Researchers in Norway conducted a study interviewing 111 out of 117 guests to a party on 26 November 2021 where there was an Omicron outbreak. Of the group interviewed, 66 had definitive cases of Covid-19 and 15 had possible cases of the virus.
Of the 111 participants, 89 per cent had received two doses of an mRNA vaccine and none had received a booster shot.
According to the findings published in the infectious disease and epidemiology journal Eurosurveillance, there were eight key symptoms experienced by the group of fully vaccinated partygoers.
These were: a persistent cough, runny nose, fatigue, sore throat, headache, muscle pain, fever and sneezing.
The study found that coughs, runny noses and fatigue were among the most common symptoms in the vaccinated individuals while sneezing and fever were least common.
Public health experts also added nausea to this list of symptoms in vaccinated people who have contracted the Omicron variant.
Although the vaccine protects against the more serious risks of the virus, it is still possible to contract Covid even if you have both jabs and a booster shot.
The mild nature of the symptoms makes it hard for people to distinguish the virus from a common cold.
But, according to Professor Tim Spector, behind the ZOE Symptom Study App, around 50 per cent of “‘new colds’ currently are, in fact, Covid”.
Two early warning signs you may have Omicron
Experts also suggest there are two distinct symptoms that could be a sign a positive test is around the corner: fatigue and spells of dizziness or fainting.
More than simply feeling tired, fatigue can translate to bodily pain by causing sore or weak muscles, headaches and even blurry vision and loss of appetite.
Dr Angelique Coetzee, a private practitioner and chair of the South African Medical Association, told Good Morning Britain that fatigue was one of the main symptoms of Omicron when the variant broke out in South Africa.
In fact, 40 per cent of women reported they struggled with fatigue due to Covid compared to one-third of men, according to a poll by WebMD that asked users how often they had suffered fatigue from 23 December 2021 to 4 January 2022.
Dizziness or fainting is the second sign that you may have Omicron.
A report from Germany recently suggested that there could be a link between fainting spells and Omicron after doctors in Berlin found that Covid was triggering recurrent dizzy spells in a 35-year-old patient admitted to hospital.
German newspaper Arztezeitung said that the doctors could see a “clear connection” between the infection and the fainting spells.
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