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The document from the Centers for Disease Control and Prevention (CDC) outlines unpublished data that shows fully vaccinated people might spread the Delta variant, first identified in India, at the same rate as unvaccinated people, reports said.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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Pak troops continue shelling along LoC in J&K, Indian Army responds proportionately: Officials
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Jammu/Srinagar (PTI): The Pakistan Army continued shelling along the Line of Control (LoC) in four sectors of Jammu and Kashmir, prompting a befitting response by the Indian Army, officials said on Thursday.
Compared to Wednesday, when the Pakistan Army carried out one of the most intense artillery and mortar shelling in years targeting the forward villages in J-K following missile strikes by India as part of 'Operation Sindoor', the intensity of cross-border firing was less and restricted to four sectors on Thursday, the officials said.
"On the intervening night of May 7 and 8, Pakistan Army resorted to unprovoked firing using small arms and artillery guns across the LoC in areas opposite Kupwara, Baramulla, Uri and Akhnoor sectors in J-K. The Indian Army responded proportionately," a defence spokesman said in Jammu.
The officials said there was no report of any casualties in the skirmishes.
The worst-hit Poonch sector in Jammu, which recorded 13 deaths in Wednesday's intense shelling, remained by and large peaceful at night, they said.
Hundreds of border residents have already moved to safer areas in view of the flare up.
Among the 13 persons killed in the Pakistani shelling was Lance Naik Dinesh Kumar of the 5-Field Regiment.
"The GOC (general officer commanding) and all ranks of White Knight Corps salute the supreme sacrifice of L/Nk Kumar of 5 Fd Regt, who laid down his life on May 7 during Pakistan Army shelling. We also stand in solidarity with all victims of the targeted attacks on innocent civilians in Poonch sector," the Army said in a post on X.
The Indian armed forces carried out missile attacks on nine terror targets in Pakistan and Pakistan-occupied Kashmir (PoK) early Wednesday to avenge the April 22 terror attack in south Kashmir’s Pahalgam that left 26 people, mostly tourists, dead.
In view of the escalating tension, the authorities have ordered that all educational institutions in five border districts of Jammu region will remain closed for the second day on Thursday.
In a post on X, Divisional Commissioner Ramesh Kumar said that all schools, colleges and educational institutions in Jammu, Samba, Kathua, Rajouri and Poonch districts will remain closed for the second day on Thursday in view of the prevailing situation.
The administration in Jammu division has also set up 24x7 control rooms in all the 10 districts of the region.
Thursday's shelling was the 14th consecutive night of firing along the borders in Jammu and Kashmir amid heightened tension following the Pahalgam attack.
Ceasefire violations along the LoC and the International Border have been very rare after India and Pakistan renewed the ceasefire agreement on February 25, 2021.
