Delta variant may spread as easily as chickenpox, cause more severe infection: Reports
New York, Jul 30: The Delta variant of the coronavirus may cause more severe illness than all other known versions of the virus and spread as easily as chickenpox, media reports quoting an internal document from the US health authority said.
The document from the Centers for Disease Control and Prevention (CDC) outlines unpublished data that shows fully vaccinated people might spread the Delta variant, first identified in India, at the same rate as unvaccinated people, reports said.
The contents of the document a slide presentation were first reported by The Washington Post on Thursday.
Dr Rochelle P Walensky, the director of the CDC, acknowledged on Tuesday that vaccinated people with so-called breakthrough infections of the Delta variant carry just as much virus in the nose and throat as unvaccinated people and may spread it just as readily, if less often.
But the internal document lays out a broader and even grimmer view of the variant.
The Delta variant is more transmissible than the viruses that cause MERS, SARS, Ebola, the common cold, the seasonal flu and smallpox, and it is as contagious as chickenpox, according to the document, a copy of which was also obtained by The New York Times.
The Delta variant originally known as B.1.617.2 might cause more severe disease, according to the document.
The immediate next step for the agency is to acknowledge the war has changed, the document said.
The document's tone reflects alarm among CDC scientists about Delta's spread across the country, the NYT quoted a federal official, who has seen the research described in the document, as saying.
The agency is expected to publish additional data on the deadly variant on Friday.
The CDC. is very concerned with the data coming in that Delta is a very serious threat that requires action now, the official said.
There are roughly 35,000 symptomatic infections per week among 162 million vaccinated Americans, according to data collected by the CDC as of July 24 that was cited in the internal presentation.
But the agency does not track all mild or asymptomatic infections, so the actual incidence may be higher.
Infection with the Delta variant produces virus amounts in the airways that are tenfold higher than what is seen in people infected with the Alpha variant, which is also highly contagious, the document noted.
The amount of virus in a person infected with Delta is a thousandfold more than what is seen in people infected with the original version of the virus, according to one recent study.
The CDC document relies on data from multiple studies, including an analysis of a recent outbreak in Provincetown, Massachusetts, which began after the town's Fourth of July festivities.
Walensky told CNN that the Delta variant "is one of the most transmissible viruses we know about. Measles, chickenpox, this -- they're all up there."
And she said everyone in schools students, staff and visitors should wear masks at all times.
"The measures we need to get this under control they're extreme. The measures you need are extreme," Walensky said.
"The bottom line was that, in contrast to the other variants, vaccinated people, even if they didn't get sick, got infected and shed virus at similar levels as unvaccinated people who got infected," Walter Orenstein, who heads the Emory Vaccine Center and who viewed the documents, told CNN.
But vaccinated people are safer, the document indicates.
"Vaccines prevent more than 90 per cent of severe disease, but may be less effective at preventing infection or transmission," it reads.
"Therefore, more breakthrough and more community spread despite vaccination," the document adds.
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Bihar CM Nitish Kumar takes oath as Rajya Sabha member
New Delhi (PTI): Bihar Chief Minister Nitish Kumar on Friday took oath as a member of Rajya Sabha, marking the end of his two-decade rule in the eastern state and paving the way for a new chief minister.
The oath was administered by Rajya Sabha Chairman C P Radhakrishnan in his chamber at a brief ceremony. The Chairman later welcomed him as a member of the Upper House and also on his return in Parliament.
Kumar took the oath in Hindi in the presence of Union Minister J P Nadda, who is also leader of the house, Finance Minister Nirmala Sitharaman, Panchayati Raj Minister Rajiv Ranjan Singh, Minister of State for Agriculture and Farmers Welfare Ram Nath Thakur and Minister of State for Law and Justice Arjun Ram Meghwal.
Bihar deputy chief minister Samrat Chaudhary was also present at the oath-taking.
JDU leader and party's working president Sanjay Kumar Jha, Congress chief whip in Rajya Sabha Jairam Ramesh, besides BJP MP and former union minister Rajiv Pratap Rudy and BJP chief whip in Lok Sabha Sanjay Jaiswal, were among those present during the oath-taking.
"Vice President of India and Chairman, Rajya Sabha, Shri C. P. Radhakrishnan, administered the oath to Shri Nitish Kumar as an elected Member of Rajya Sabha, from Bihar, at Parliament House today," the Vice President's office said on X, while sharing pictures of the oath-taking.
After the oath-taking, Kumar came out of the new Parliament building and spoke about the time he was a member of the Lok Sabha and sat in the old Parliament building.
As Kumar assumes the Rajya Sabha role, it marks the end of his long two-decade rule in Bihar. Kumar will soon resign as chief minister and the NDA is likely to elect a new chief minister of Bihar on April 14.
He has already resigned as a member of the State Legislative Council on March 30 after he was elected to Rajya Sabha.
The JD(U) supremo was elected to the Upper House of Parliament on March 16, and he had to quit as an MLC in the 14-day period after his election.
