China has put nearly 30 million people under strict lockdown measures as the country recorded a steep rise in new coronavirus infections, which have hit a two-year high.
The country has taken some of the most drastic measures since the start of the pandemic, even though its caseload is low compared with other major countries because it has tethered itself tightly to a “zero-Covid” strategy.
The latest increase is due to Omicron, reported to be the dominant variant.
First detected in Southern Africa and Hong Kong in November 2021, Omicron was soon confirmed as the dominant variant in the UK in December.
Most common symptoms for the fully vaccinated
Researchers in Norway conducted a study interviewing 111 out of 117 guests from 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 infectious disease and epidemiology journal, Eurosurveillance, there were eight key symptoms experienced by the group of fully vaccinated partygoers.
These were cough, runny nose,fatigue, sore throat, headache, muscle pain, fever and sneezing.
The study found that cough, runny nose and fatigue were among the most common symptoms in the vaccinated individuals while sneezing and fever were least common.
Public health experts also add 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.