More than 1,000 Americans got unwell from lettuce infected with a diarrhea parasite.
The outbreak spread across multiple states.
No cases appeared in Canada.
Health teams advise people to clean all lettuce thoroughly and skip raw salads unless the source is known.
COVID-19 has a secret route in the lungs that makes swelling intensified.
Doctors in the US excised a young patient’s infected tissue after aggressive Streptococcus A caused necrotizing fasciitis and pneumonia.
A engineered bone graft is now being tested to help people with bone cancer while keeping infections low.