China on Tuesday witnessed its worst Covid-19 outbreak with its highest daily count since the start of the pandemic. China reported 5,280 new coronavirus infections in the last 24 hours with the worst-hit area being the Jilin province, due to the fast spread of the Omicron BA.2 sub-variant of Covid-19. Over 30% of the 2022 cases have now been recorded in the northeastern province of Jilin. Before this, the country had officially seen only two days of daily Covid infections exceeding the 5,000-mark - both during the initial outbreak in Wuhan. According to the National Health Commission in China, 1,337 locally transmitted cases have been reported in the last 24-hours. The country has seen symptomatic cases confirmed in 28 of 31 mainland provinces. This outbreak comes at a time when several other countries are witnessing a decline in coronavirus infections and are easing restrictions.
The sub-variant is also known as the BA.2 variant and is different from the parent variant. The sub-variant is concerning because it is hard to detect. This variant is missing key mutations in the spike protein which are generally necessary for rapid PCR tests to identify the infection. According to the World Health Organization (WHO), the BA.2 variant is likely to have the same severity as the 'original' one. Dizziness and fatigue are two of the most early-stage reported symptoms in patients infected by the stealth omicron. These symptoms are likely to appear within two to three days after being infected with the virus. Other symptoms may also include fever, extreme fatigue, coughing, sore throat, sore hand, muscular fatigue, cold, and elevated heart rate. The sub-variant has fueled a massive outbreak in China. It is also becoming dominant in other countries including the Philippines, Nepal, Qatar, Denmark, and India.