health secretary Sajid Javid announced on Saturday that he has contracted Covid-19Despite having both doses of the vaccine.
Mr Javid said his symptoms were “mild”, but he felt “panic” in a video in which he announced he would be self-isolating.
But how likely is it that a person who has had both jaws can get infected with the coronavirus?
Studies have shown that Vaccines are highly effective, but there have been reports that a small percentage of people who are fully vaccinated will still get COVID. they are called “Vaccine Success Cases”.
But the data shows that they are very unlikely to become so ill that they require hospital treatment, or die.
It is also possible for people to contract the virus just before or after receiving the jab before developing immunity.
It usually takes a fortnight for the body to boost protection, and this is why at least two weeks have to elapse after the second jab is administered before one.vaccine passport” has been issued.
independent Contacted Public Health England (PHE) and asked how likely someone was to be infected with the virus after being fully vaccinated.
The health body pointed to its report, published on Thursday, which said the chances of both symptomatic illness and passing the virus to others drop significantly after having jabs – but that infection is still possible.
Uninfected people cannot transmit the virus, so as long as the infection rate is reduced, the transmission rate is low. However, the virus can be passed on if the infected person is infected but asymptomatic.
According to the report, two doses of the vaccine are 70 to 90 percent effective against the infection, depending on the type of vaccine.
Two jabs of the Pfizer vaccine reduce symptomatic disease by between 85 and 95 percent, hospitalization by 90 to 99 percent, death by 95 to 99 percent, and infection by 70 to 90 percent.
Two jabs of the Oxford/AstraZeneca vaccine reduced symptomatic disease by 70 to 85 percent, hospitalization by 80 to 99 percent, death by 75 to 99 percent, and infection by 65 to 90 percent.
There is no data yet on how much the two jab blocks transmission of the virus, but some data show that just one jab prevents it from passing by between 35 and 50 percent – with Pfizer being more effective than the jab. Oxford/AstraZeneca Vaccine.
These figures pertain to the period when the alpha version – also known as b.1.1.7 or “the UK version” – dominated the UK.
Of the 417 people who received their second dose of either the Pfizer vaccine or the single-jab Moderna vaccine, only two were found to have contracted Covid in a study published in June. New England Journal of Medicine.
The study team were employees of Rockefeller University, who had their jabs at least two weeks before being tested for the virus between January 21 and March 17 earlier this year.
PCR tests showed that two women, aged 51 and 65, with no risk factors for severe COVID- were infected with the COVID variant. Their symptoms included a sore throat, congestion, headache, loss of smell and fatigue – which resolved within a week for both women.
Mr Javid said he had taken a lateral flow test (LFT) on Friday evening after feeling “a bit upset”, and it showed that he had tested positive.
He said: “I am grateful that I have received the vaccine twice and so far my symptoms have been very mild.”
Mr Javid is awaiting the results of the PCR test while self-isolating at home with his family, he said in a video posted on his Twitter account.
He also urged people who had not received the vaccine to “get out there and get them as soon as possible”.
Gavi, the global vaccine alliance organization, says that LFTs – which return results on the spot within 30 minutes – are less accurate that PCR tests that are sent to a lab and take about two to three days to return results.
According to Gavi, it is possible for the LFT to give a false negative result, but it is “highly unlikely” for it to show a false positive result.