People who are fully vaccinated against Covid, but who become infected with the virus, are just as contagious to others in their family as unvaccinated infected people, new research suggests .
Families are a key environment for the transmission of Covid infections due to frequent and daily contact with an infected person.
For the Lancet , researchers from several institutions including Imperial College London and the UK Health and Safety Agency report that they analyzed data from 204 home contacts of 138 people infected with the Delta variant.
The results suggest that even those who are fully vaccinated have a significant risk of becoming infected. Analyzes reveal that a fully vaccinated contact has a 25% chance of getting the virus from an infected family member, while an unvaccinated contact has a 38% chance of becoming infected.
The team adds that the maximum level of the virus in infected individuals was the same, regardless of whether they were vaccinated or not, although levels dropped faster in vaccinated people, suggesting that they "clear" the infection faster.
So if fully vaccinated individuals become infected, they remain protected against severe Covid symptoms and death and tend to have only a mild infection.
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