Cases of COVID-19 are extremely rare among people who are fully vaccinated, according to a new analysis of data from the Centers for Disease Control and Prevention.
Among the more than 75 million fully vaccinated people in the United States, only about 5,800 report a “breakthrough” infection in which they become infected with the pandemic coronavirus, even though they have been fully vaccinated.
The figures suggest that outbreaks occur in the lowest percentage of less than 0.008 percent of fully vaccinated people – and that more than 99.992 percent of those vaccinated have not contracted a SARS-CoV-2 infection.
The figures come from a national database created by the CDC to track outbreaks and to monitor for any indications that outbreaks may be grouped by patient demographics, geographic location, time after vaccination, vaccine type, or vaccine number. batch of vaccine. The Agency will also closely monitor any breakthrough infections caused by variants of SARS-CoV-2 that have been shown to interfere with the efficacy of the vaccine.
So far, the vaccines appear to be very effective and are working as expected, according to a CDC analysis – which the agency provided to Ars by email.
The majority of people in the United States have been vaccinated with one of the mRNA vaccines made by Moderna and Pfizer-BioNTech, both of which were about 95 percent effective in phase III clinical trials. Less than five percent of people in the United States have received a Johnson & Johnson-based adenovirus vaccine, which has a slightly lower efficacy than 72% in the United States.
The unusual estimate that 99.992 percent of vaccinated people were not infected with the virus may reflect that not all of them were simply exposed to the virus after being vaccinated. There are also probable cases missed in reporting. Still, the data is a reassuring sign.
“COVID-19 vaccines are effective and a critical tool for controlling the pandemic,” the agency said in an email. “To date, no unexpected patterns have been identified in the case of demographic data or vaccine characteristics.”
For now, keep disguising yourself
Many breakthroughs have occurred in older people who are well known to be more vulnerable to COVID-19. More than 40 percent were in people over the age of 60. However, the agency noted that there are breakthrough infections scattered in each age group that currently qualifies for vaccination.
“We see [breakthroughs] with all vaccines, “said Infectious Diseases’ best infectious disease expert at a press briefing earlier this week. “No vaccine is 100% effective or efficient, which means you will always see breakthrough infections, regardless of the effectiveness of your vaccine.”
Vaccines can fail in some people due to a variety of factors, including immune status, health, age, and the medications they are prescribed. Something is also likely to go wrong with the vaccines themselves, such as improper storage, delivery or composition, Fauci explained.
“However,” Fauzi added, “even if the vaccine fails to prevent infection, it often protects against serious diseases.” He highlighted the case of the 2019-2020 flu vaccine, which was only 39% effective. However, and the fact that only about 52 percent of people received their immunizations, the vaccine is estimated to have prevented 105,000 flu hospitalizations and 6,300 deaths.
In the CDC’s data on breakthrough infections with COVID-19, the agency found that 29 percent of infections were asymptomatic. Only seven percent of the 5,800 outbreaks resulted in hospitalization, and there were only 74 deaths. This suggests that mortality among breakthrough cases is about one percent, and among all fully vaccinated people – about 0.0001%.
Although the risk is small, there is still a risk. The CDC stressed that everyone should be vaccinated when it is their turn, and once vaccinated, should continue to observe health precautions for the time being, such as “wearing a mask, staying at least 6 feet away from others. , avoid crowds and poorly ventilated rooms and wash their hands often. “