BA.4 made up 5.4 per cent of the new cases, while BA.5 made up 7.6 per cent, according to CDC estimates.
The genome sequencing body further said that the contact tracing of the BA.4 and BA.5 patients is being undertaken as a precautionary measure.
The outbreak forced leader Kim Jong Un to wear a mask in public likely for the first time since the start of the pandemic, but the scale of transmissions inside North Korea wasn't immediately known. A failure to slow infections could have serious consequences because the country has a poor health care system and its 26 million people are believed to be mostly unvaccinated. Some experts say the North, by its rare admission of an outbreak, may be seeking outside aid.
New Zealand is currently under the orange settings of the Covid-19 Protection Framework, where there is no limit for gatherings.
While existing vaccination can still reduce the risk of severe Covid disease, the variants can evade many of the neutralising antibodies that are the immune system's front line of defence.
NSW Health reported that the state's first case of BA.4 was a traveller who returned from South Africa, reports Xinhua news agency.
The team explained that SARS-CoV-2 can cause severe paediatric disease, including acute Covid-19 and multisystem inflammatory syndrome. Published reports associating SARS-CoV-2 with upper airway infection, such as laryngotracheobronchitis (croup), have been limited to small case series.
A massive crowd was seen at a three-day flea market festival at the JLN Stadium here that ended on Sunday. Very few people were seen wearing mask at the venue. The visuals from the festival have been widely shared on social media.
BIG Cut In Covid19 Vaccine Prices Announced
Covaxin will now cost Rs 225 per dose at private hospitals, from Rs 1,200 earlier.
It forms clusters as it successfully spreads to people, and this gets noticed during genome sequencing. Only these successful sublineages make news which are given names like XD, XE etc.
Globally, BA.2 made up about 86 per cent of cases reported as updated on the open access database GISAID between February 16 and March 17, the agency said in a report this week.
The country also announced it will not lift more Covid restrictions amid rising infections "in several locations around the world", the Prime Minister's Office said in a statement.
Meanwhile, although BA.2 sequences are increasing in proportion relative to other Omicron sublineages, there is still a reported decline in overall cases globally.
Several countries have seen a decline in Omicron variant-led Covid surge. The decrease in cases has also led to lifting restrictions. Sweden, Denmark, and Norway have all lifted Covid restrictions as they look to reclassify the virus as a disease that does not pose a threat to society. The UK and the US are soon likely to follow.
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