The 2022–2023 United States Pseudomonas aeruginosa outbreak began in May 2022, with the infection of several patients in California.
The Centers for Disease Control and Prevention (CDC) became aware of a strain of Pseudomonas aeruginosa in artificial tears manufactured by EzriCare and Delsam Pharma in January 2023.
[2] The CDC was notified of eye infections among four people at an ophthalmology clinic in California in late June 2022, and received notice of an outbreak at long-term care facilities in Connecticut in late July and Utah in August involving 21 and three people, respectively.
[3] On February 2, 2023, the CDC advised people to stop using EzriCare Artificial Tears and said that the eye drops were contaminated.
[9] In comparison, P. aeruginosa is "pretty much everywhere" in India, according to Christian Medical College researcher Gagandeep Kang.