Keira Knightley returns to filming the Boston Strangler after contracting COVID-19

Keira Knightley was in fine form as she returned to the movie set after contracting a breakthrough case of COVID-19. 

The actress, 36, was spotted filming the Boston Strangler in Cambridge, Massachusetts on Friday, just days after it emerged she and her family were battling the virus.

Though she admitted to feeling like ‘rubbish’ in the midst of her illness, Keira looked in good health as she threw herself into the character of Loretta McLaughlin, the groundbreaking reporter who broke the story of the Boston Strangler in the early 1960s.

Back at it! Keira Knightley was in fine form as she returned to the film set after contracting COVID-19 despite being vaccinated

Keira was dressed in costume as she stepped out onto the set, located on Lesley University.

The star wore a classic green coat, belted dress, black heels and floral scarf dangling around her neck.

Her short hair was given an elegant twist as it was styled into loose curls which framed her face with a side part.

At times, and in departure from her vintage look, she bundled up against the wintry weather with a large midnight blue jacket which fell to her knees.

Class act: Keira was dressed in costume as she stepped out onto the set, located on Lesley University

Curl power: Her short hair was given an elegant twist as it was styled into loose curls which framed her face with a side part

Helping hand! A masked-up employee assisted Keira into her bulky blue jacket 

A masked-up employee assisted Keira into her thick winter jacket, and the actress couldn’t help but let out a relieved smile as she tossed on the extra layer of warmth.

Keira described her battle with COVID-19 in an interview with the Sunday Telegraph’s Stella magazine which was published last weekend.

Double-jabbed Keira is married to Klaxons musician James Righton and they share two daughters, Edie, six and Delilah, two – who she revealed were faring better than her.

Braving the elements: Keira couldn’t help but let out a smile as she tossed on the extra layer of warmth 

Throwing herself into work: Just a week after her interview was published concerning her breakthrough case of COVID0-19, Knightley was back on the film set

She said of her asymptomatic husband: ‘[He is] being very smug about it – he is convinced it’s because he’s one of those cold-water swimmers and I’m not.’

The actress admitted she was ‘feeling pretty rubbish.’ 

A rep for the actress told People that Keira and her husband were fully vaccinated and had finished their required 10 days in quarantine.  

In October it was revealed that double-jabbed people still have a one in four chance of catching Covid from an infected household member, according to a study by ‘Professor Lockdown’ Neil Fergusson.

This is even the case if the person infected was fully jabbed themselves, in what is known as a vaccine breakthrough case, said Imperial College London researchers.

However, jabbed people recovered quicker from the virus, resulting in less severe and shorter symptoms. Being vaccinated also decreases a person’s chance of getting Covid in the first place.

Brrr! Knightley didn’t let the chilly temperatures keep her from doing her job