A mum was left furious after her sister-in-law lied about a Covid test before infecting their whole family with the virus, according to her post on Mumsnet.
The 41-year-old sister in law is thought to have visited her boyfriend on December 25, despite him being in isolation.
The woman told Mumsnet that she, her husband, mum, brother and sister-in-law have all produced positive test results after the family sat down for a meal together on the day.
All of her sister-in-law's flatmates and other family members were also infected, MyLondon reports.
David Davies
the 41-year-old is said to have told her relatives that she took a Covid test in the morning before the visit, but actually hadn't tested since Wednesday in the week before.
The incensed mother wrote: "It transpires that [sister-in-law] 2 is almost certainly the source.
"She said she had tested negative on the morning of Christmas Day before she came to ours, but it now turns out she had not tested since last Wednesday.
"Her boyfriend has Covid and she has been visiting him whilst he is in isolation.
She spent the whole day with us, as well as Boxing Day.
"No one else in the group has been in contact with the virus, my in-laws were isolating and paranoid about testing as [my mother-in-law] has an operation in the first week of January (which will be cancelled if she has Covid).
"My brother worked from home for a week before Christmas and didn't meet anyone else, my mum only met with my household and my brother in the week before Christmas and sister-in-law 1 worked from home and didn't meet anyone else in that week.
"[The sister-in-law's] flatmates are also now all positive, it turns out she told them she was only visiting her parents, not her Covid isolating boyfriend, some of them now suspect that they have now spread it to their wider families as well."
The woman explained the outbreak has resulted in a large impact on the family.
She said: "My [mother-in-law's] operation next week will almost certainly be cancelled.
"My mum can't risk going to the theatre tonight that she has been looking forward to for months.
"My brother is stuck at home for seven to ten days and can't visit his best friends newborn son.
"My kids can not go to the special event tomorrow that they have been hyped for since we told them on Christmas day.
"[Sister-in-law] 1 was due to spend new year with friends and is now in isolation and [sister-in-law] 2's flatmates all have to isolate and have potentially infected their families over Christmas.
"She thinks she has done nothing wrong by lying about testing negative, infecting 10-20 people, I am absolutely fuming with her."
Fellow Mumsnet users have offered their support and views to the woman following the episode.
One said: "Your poor [mother-in-law]. Unbelievably selfish from your [sister-in-law]."
While another added: "She's selfish and is now reaping the consequences. If [your mother-in-law] misses her operation because of her selfishness then it might be a while before anyone speaks to her."
