Transmission of SARS-CoV-2 Delta Variant Among Vaccinated Healthcare Workers, Vietnam

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Oxford University study finds fully vaccinated Healthcare workers carry 251 times viral load compared to the unvaccinated proving the Covid-19 jabs make you worse
BY DAILY EXPOSE ON AUGUST 24, 2021 • ( 13 COMMENTS )

 

 

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A groundbreaking preprint paper by the prestigious Oxford University Clinical Research Group, published Aug. 10 in The Lancet, includes alarming findings devastating to the COVID vaccine rollout. 
The study found vaccinated individuals carry 251 times the load of COVID-19 viruses in their nostrils compared to the unvaccinated.
 
By Dr Peter McCullough
 
While moderating the symptoms of infection, the jab allows vaccinated individuals to carry unusually high viral loads without becoming ill at first, potentially transforming them into presymptomatic superspreaders. 
This phenomenon may be the source of the shocking post-vaccination surges in heavily vaccinated populations globally. 
The paper’s authors, Chau et al, demonstrated widespread vaccine failure and transmission under tightly controlled circumstances in a hospital lockdown in Ho Chi Minh City, Viet Nam.
The scientists studied healthcare workers who were unable to leave the hospital for two weeks. The data showed that fully vaccinated workers — about two months after injection with the Oxford/AstraZeneca COVID-19 vaccine (AZD1222) — acquired, carried and presumably transmitted the Delta variant to their vaccinated colleagues. 
They almost certainly also passed the Delta infection to susceptible unvaccinated people, including their patients. Sequencing of strains confirmed the workers transmitted SARS-CoV-2 to one another. 
This is consistent with the observations in the U.S. from Farinholt and colleagues, and congruent with comments by the director of the Centers for Disease Control and Prevention conceding COVID-19 vaccines have failed to stop transmission of SARS-CoV-2.   
On Feb. 11, the World Health Organization indicated the AZD1222 vaccine efficacy of 63.09% against the development of symptomatic SARS-CoV-2 infection. The conclusions of the Chau paper support the warnings by leading medical experts that the partial, non-sterilizing immunity from the three notoriously “leaky” COVID-19 vaccines allow carriage of 251 times the viral load of SARS-CoV-2 as compared to samples from the pre-vaccination era in 2020. 
Thus, we have a key piece to the puzzle explaining why the Delta outbreak is so formidable — fully vaccinated are participating as COVID-19 patients and acting as powerful Typhoid Mary-style super-spreaders of the infection. 
Vaccinated individuals are blasting out concentrated viral explosions into their communities and fueling new COVID surges. Vaccinated healthcare workers are almost certainly infecting their coworkers and patients, causing horrendous collateral damage. 
Continued vaccination will only make this problem worse, particularly among frontline doctors and nurses workers who are caring for vulnerable patients. 
Health systems should drop vaccine mandates immediately, take stock of COVID-19 recovered workers who are robustly immune to Delta and consider the ramifications of their current vaccinated healthcare workers as potential threats to high risk patients and coworkers.

31 Pages Posted: 10 Aug 2021

Nguyen Van Vinh Chau

Hospital for Tropical Diseases

Nghiem My Ngoc

Hospital for Tropical Diseases

Lam Anh Nguyet

Hospital of Tropical Diseases - Oxford University Clinical Research Unit

Vo Minh Quang

Hospital for Tropical Diseases

Nguyen Thi Han Ny

Hospital of Tropical Diseases - Oxford University Clinical Research Unit

Dao Bach Khoa

Hospital for Tropical Diseases

Nguyen Thanh Phong

Hospital for Tropical Diseases

Le Mau Toan

Hospital for Tropical Diseases

Nguyen Thi Thu Hong

Hospital of Tropical Diseases - Oxford University Clinical Research Unit

Nguyen Thi Kim Tuyen

Hospital of Tropical Diseases - Oxford University Clinical Research Unit

Voong Vinh Phat

Hospital of Tropical Diseases - Oxford University Clinical Research Unit

Le Nguyen Truc Nhu

Hospital of Tropical Diseases - Oxford University Clinical Research Unit

Nguyen Huynh Thanh Truc

Hospital for Tropical Diseases

Bui Thi Ton That

Hospital for Tropical Diseases

Huynh Phuong Thao

Hospital for Tropical Diseases

Tran Nguyen Phuong Thao

Hospital for Tropical Diseases

Vo Trong Vuong

Hospital for Tropical Diseases

Tran Thi Thanh Tam

Hospital for Tropical Diseases

Ngo Tan Tai

Hospital for Tropical Diseases

Ho The Bao

Hospital for Tropical Diseases

Huynh Thi Kim Nhung

Hospital for Tropical Diseases

Nguyen Thi Ngoc Minh

Hospital for Tropical Diseases

Nguyen Thi My Tien

Hospital for Tropical Diseases

Nguy Cam Huy

Hospital for Tropical Diseases

Marc Choisy

Hospital of Tropical Diseases - Oxford University Clinical Research Unit

Dinh Nguyen Huy Man

Hospital for Tropical Diseases

Dinh Thi Bich Ty

Hospital for Tropical Diseases

Nguyen To Anh

Hospital of Tropical Diseases - Oxford University Clinical Research Unit

Le Thi Tam Uyen

Hospital for Tropical Diseases

Tran Nguyen Hoang Tu

Hospital for Tropical Diseases

Lam Minh Yen

Hospital of Tropical Diseases - Oxford University Clinical Research Unit

Nguyen Thanh Dung

Hospital for Tropical Diseases

Le Manh Hung

Hospital for Tropical Diseases

Nguyen Thanh Truong

Hospital for Tropical Diseases

Tran Tan Thanh

Hospital of Tropical Diseases - Oxford University Clinical Research Unit

Guy Thwaites

Hospital of Tropical Diseases - Oxford University Clinical Research Unit

Le Van Tan

Hospital of Tropical Diseases - Oxford University Clinical Research Unit

OUCRU COVID-19 Research Group

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Abstract

Background: Data on breakthrough SARS-CoV-2 Delta variant infections are limited.Methods: We studied breakthrough infections among healthcare workers of a major infectious diseases hospital in Vietnam. We collected demographics, vaccination history and results of PCR diagnosis alongside clinical data. We measured SARS-CoV-2 (neutralizing) antibodies at diagnosis, and at week 1, 2 and 3 after diagnosis. We sequenced the viruses using ARTIC protocol.Findings: Between 11th–25th June 2021 (week 7–8 after dose 2), 69 healthcare workers were tested positive for SARS-CoV-2. 62 participated in the clinical study. 49 were (pre)symptomatic with one requiring oxygen supplementation. All recovered uneventfully. 23 complete-genome sequences were obtained. They all belonged to the Delta variant, and were phylogenetically distinct from the contemporary Delta variant sequences obtained from community transmission cases, suggestive of ongoing transmission between the workers. Viral loads of breakthrough Delta variant infection cases were 251 times higher than those of cases infected with old strains detected between March-April 2020. Time from diagnosis to PCR negative was 8–33 days (median: 21). Neutralizing antibody levels after vaccination and at diagnosis of the cases were lower than those in the matched uninfected controls. There was no correlation between vaccine-induced neutralizing antibody levels and viral loads or the development of symptoms.Interpretation: Breakthrough Delta variant infections are associated with high viral loads, prolonged PCR positivity, and low levels of vaccine-induced neutralizing antibodies, explaining the transmission between the vaccinated people. Physical distancing measures remain critical to reduce SARS-CoV-2 Delta variant transmission.
https://dailyexpose.co.uk/2021/08/24/oxford-university-study-finds-full…