People who have received two doses of the Covid-19 vaccine can be just as infectious as those who have not been vaccinated, a report on the BBC says.

Even if these people show no or few symptoms, they have a 2-in-5, or 38 percent, probability of infecting their uninfected housemates, the report noted, adding that if both housemates are fully vaccinated, the risk lowers to one in four or 25%.

The Lancet study

The BBC report cites a Lancet Infectious Diseases study explaining why getting more people protected and vaccinated is crucial.

The Lancet study warns that unvaccinated individuals cannot rely on those around them being vaccinated to protect them from infection.

Vaccines are effective in preventing serious Covid sickness and death, but they are less effective in preventing infections, especially with the spread of the more infectious Delta form, which is prevalent in the UK.

It should be noted that vaccine protection wears off over time, necessitating more doses to maintain it, the report says.

Most Covid transmission occurs in households

Experts argue that because most Covid transmission occurs in households, making sure that everyone who is eligible for a vaccine has received one and is up to date with their doses is logical, BBC report says.

According to the findings of the study, which took place from September 2020 to September 2021 and involved 440 households in London and Bolton performing PCR Covid tests:

• When compared to uninfected people, double jabbed people have a lower, but still significant, risk of contracting the Delta form.
• They also appear to be "equally infectious."
• Vaccinated people recover faster from infection, but their peak viral load - the point at which they are most infectious - is identical to that of unvaccinated individuals.
• This could explain why they can still easily spread the infection at home.