Washington, United States: Despite being fully vaccinated, 0.01 percent of people became infected with Covid-19 between January and April, according to a US government report released Tuesday.
The Centers for Disease Control and Prevention (CDC) produced a report that identified so-called “breakthrough” cases among the US’s 101 million fully vaccinated citizens.
“Even though FDA-authorized vaccines are highly effective, breakthrough cases are expected, especially before population immunity reaches sufficient levels to further decrease transmission,” the report said.
It looked at the months of January to April.
At least 14 days following the final dose of a vaccine provisionally approved by the Food and Drug Administration — Pfizer, Moderna, or Johnson & Johnson — a total of 10,262 COVID-19 illnesses were documented.
Females accounted for 6,446 of the cases or 63 percent, and the median patient age was 58 years.
Of the total number of breakthroughs, 2,725 (or 27 percent) were asymptomatic, 706 (or 7%) were hospitalised for Covid-related reasons, and 132 (or 1%) died from Covid-related causes.
As a result, the rate of breakthrough infections is around 0.01 percent, hospitalizations are around 0.0007%, and mortality is around 0.0001%.
The genomic sequences were available for 5% of all Covid cases, and they revealed that 64 percent of cases were caused by potentially dangerous mutations.
The most notable was B.1.1.7, which was discovered in the United Kingdom for the first time.
The study took place during a period when the coronavirus was sweeping the country, with over 355,000 cases reported in the last week of April alone.
“The number of Covid-19 cases, hospitalizations, and deaths that will be prevented among vaccinated persons will far exceed the number of vaccine breakthrough cases,” the authors wrote.
The real number of vaccine breakthrough cases is likely to be far higher, as most will result in silent or mild infections that will not be evaluated, according to the CDC.
The lack of widespread surveillance systems further limits the data on variants.
The CDC began monitoring all data on breakthrough infections on May 1 and has since narrowed its focus to only severe cases and deaths, which are more clinically significant.
However, several scientists said that they would be missing out on vital data as a result of the decision, and they condemned it.
Approximately 164 million people, or 50 percent of the overall population of the United States, have received at least one dose of vaccination, with 39 percent being fully vaccinated.