Pfizer and Johnson & Johnson are still confident that their vaccines can protect against COVID-19 variants despite a recent report warning about hundreds of breakthrough infections in a Massachusetts town. 

The new study from the Centers for Disease Control and Prevention focused on an outbreak in the Cape Cod town of Provincetown, a heavy tourist hotspot in Barnstable County, after the July 4 weekend. 

Pfizer and Johnson & Johnson told Fox News that they remain certain that their vaccines prevent severe illness and death despite the alarming report amid the spread of the Delta variant.

Moderna, the third major COVID-19 vaccine maker in the United States, did not appear to address the efficacy of the vaccine with Fox News.

Pfizer and Johnson & Johnson are still confident that their vaccines can protect against COVID-19 variants and serious illness, despite a recent report warning about hundreds of breakthrough infections in a Massachusetts town. Pictured: Pedestrians reflected in a store window walk down Commercial Street in Provincetown during the coronavirus pandemic

Pfizer and Johnson & Johnson are still confident that their vaccines can protect against COVID-19 variants and serious illness, despite a recent report warning about hundreds of breakthrough infections in a Massachusetts town. Pictured: Pedestrians reflected in a store window walk down Commercial Street in Provincetown during the coronavirus pandemic

A nurse gives Eric Wilson, 20, a dose of the Moderna COVID-19 vaccine in Mississippi on Tuesday

A nurse gives Eric Wilson, 20, a dose of the Moderna COVID-19 vaccine in Mississippi on Tuesday

Moderna said that the safety of the company's products is 'paramount' as it monitors 'safety across all products in practice and in trials'

Moderna said that the safety of the company's products is 'paramount' as it monitors 'safety across all products in practice and in trials'

Bartender Denis Angelov pours drinks at Tin Pan Alley restaurant in Provincetown in April

Bartender Denis Angelov pours drinks at Tin Pan Alley restaurant in Provincetown in April

DailyMail.com has reached out to the three vaccine makers for more information and additional comment in the wake of the CDC study. 

'The vaccine continues to be highly efficacious in preventing COVID-19, including variants and to date, no variant, including Delta, appears to have escaped the protection of the vaccine,' Pfizer said in a statement to Fox News.

'Furthermore, two doses of BNT162b2 continue to show high efficacy from preventing severe disease and hospitalizations.'

Pfizer reportedly declined to comment on the CDC data to Fox News.

Johnson & Johnson also maintained their vaccine while backing a recent change to federal mask guidance. The CDC recommended last Tuesday that even those who are fully vaccinated should wear masks in indoor public settings in areas where COVID-19 transmission is high or substantial.

'All authorized COVID-19 vaccines have been shown to help prevent infection and reduce the severity of illness, which is why COVID-19 vaccinations are such an important tool to help end the pandemic,' Johnson & Johnson told Fox News. 

'As noted by the CDC, though a small percentage of people who are fully vaccinated can still get COVID-19, developing severe illness is still a rare occurrence.'

Johnson & Johnson reiterated findings from the CDC study which found that, of the 469 cases of breakthrough infections observed in Barnstable County, only 1.2% were hospitalized. 

'As of July 27, no deaths were reported in the cases the CDC studied, which is a sign vaccination is working as intended,' Johnson & Johnson told Fox News.

In a press release ahead of the July 4 weekend, Johnson & Johnson announced data 'that demonstrated its single-shot COVID-19 vaccine generated strong, persistent activity against the rapidly spreading Delta variant' and other variants. 

'In addition, the data showed that the durability of the immune response lasted through at least eight months,' the release reads.

Meanwhile, Moderna told Fox News that the safety of the company's products is 'paramount' as it monitors 'safety across all products in practice and in trials.'

The CDC study, published on Friday, found 469 cases of COVID-19 associated with multiple summer events and large public gatherings - even though 69% of Massachusetts residents were vaccinated.

A map shows the total number of coronavirus infections and deaths in the United States

A map shows the total number of coronavirus infections and deaths in the United States

A graph shows the number of deaths from the coronavirus in the United States per day since the start of the pandemic

A graph shows the number of deaths from the coronavirus in the United States per day since the start of the pandemic

A graph shows the number of coronavirus deaths in the United States per day in July and August

A graph shows the number of coronavirus deaths in the United States per day in July and August

A graph shows the number of coronavirus infections in the United States per day since the start of the pandemic

A graph shows the number of coronavirus infections in the United States per day since the start of the pandemic

A graph shows the number of coronavirus infections in the United States per day in July and August

A graph shows the number of coronavirus infections in the United States per day in July and August

Researchers said that 346 cases - or 74% - occurred in fully vaccinated people. Scientists did DNA sequencing on 133 of those patients and found that 119 of them, or 89%, had the Delta variant.

The study found that 79% of vaccinated patients with breakthrough infection were symptomatic. There were five COVID-19 patients who were hospitalized, four of whom were fully vaccinated - though no deaths were reported.

Researchers found that the Delta variant is 'highly transmissible' but that 'vaccination is the most important strategy to prevent severe illness and death.'

The study found that viral loads, which indicate the likelihood that someone could transmit the virus to others, were similar among 127 fully vaccinated people and 84 people who were unvaccinated or partially vaccinated. 

CDC Director Rochelle Walensky called the 'pivotal discovery' on viral loads 'concerning' in a statement issued on Friday

CDC Director Rochelle Walensky called the 'pivotal discovery' on viral loads 'concerning' in a statement issued on Friday

This graph shows how many people someone infected with the above diseases is likely to transfer them on to. For people who catch chickenpox, scientists estimate they will pass on the infection to between 10 and 12 others. And for those who catch measles, they are thought to pass it on to 12 to 18 others. Scientists at the CDC have estimated every person who catches the Indian 'Delta' variant of Covid could pass it on to eight other people. But British scientists say this is not correct

This graph shows how many people someone infected with the above diseases is likely to transfer them on to. For people who catch chickenpox, scientists estimate they will pass on the infection to between 10 and 12 others. And for those who catch measles, they are thought to pass it on to 12 to 18 others. Scientists at the CDC have estimated every person who catches the Indian 'Delta' variant of Covid could pass it on to eight other people. But British scientists say this is not correct

CDC Director Rochelle Walensky called the 'pivotal discovery' on viral loads 'concerning' in a statement issued on Friday.

'High viral loads suggest an increased risk of transmission and raised concern that, unlike with other variants, vaccinated people infected with Delta can transmit the virus,' she said.

'This finding is concerning and was a pivotal discovery leading to CDC’s updated mask recommendation. The masking recommendation was updated to ensure the vaccinated public would not unknowingly transmit virus to others, including their unvaccinated or immunocompromised loved ones.'

The CDC has noted that all authorized vaccines have shown 65% to 95% efficacy in preventing symptomatic, laboratory-confirmed COVID-19 - and more than 89% effectiveness against the coronavirus severe enough to require hospitalization. 

While some breakthrough cases are possible, health officials have continued to tell Americans that vaccines substantially reduce the spread of COVID-19 - even against the Delta variant. 

On Monday, Walensky reiterated that 'this remains a pandemic of the unvaccinated' - noting that unvaccinated Americans are the primary cause for recent transmission rates and account for most new hospitalizations and deaths. 



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