The actor, who played Shannon Rutherford in the hit series, hit back at Avengers: Endgame star Lilly for undercutting the importance of social distancing after describing the deadly illness as “respiratory flu”.
Lilly’s stance provoked consternation among many fans following a post on her Instagram that she captioned: “Just dropped my kids off at gymnastics camp. They all washed their hands before going in. They are playing and laughing #businessasusual.”
Grace responded underneath Lilly’s post, writing: “Sure, it’s a free country, but how about choosing to exercise some of that wonderful freedom to have some compassion, trust the extensive science here and not overwhelm health system.
“No doctor should have to choose which patients get life saving care and which patients get sent home to die – the sort of triage that is tragically happening in Italy right now,” she continued.
“’Think about how these small decisions effect [sic] your dad and those in your community as ventilators run out.”
Lilly’s father has stage four leukaemia.
“Your kids will be just fine without going to the gymnastics, I promise,” she said.
Referring to their co-star Daniel Dae Kim, who revealed last week he had contracted the illness, Grace added: “’PS Daniel said he is doing a lot better btw. I don’t know, Maybe you guys want to chat.”
Lilly played Kate Austen in the ABC series, while Kim played Jin Soo-Kwon. The show lasted for six seasons and ran from 2004 to 2010.
Earlier this week, a scene from the ABC drama’s second season went viral after Boris Johnson told the UK to go into lockdown.