Hantavirus Shows No Sign of Mutation as US Cruise Case Cleared

The respiratory virus behind a deadly outbreak on a cruise ship is showing no sign of mutating to become more contagious, European health officials said, as a US patient initially treated as a potential hantavirus case has been cleared of infection.

One passenger who had been taken to the Nebraska Biocontainment Unit was medically cleared and moved to a quarantine facility, the University of Nebraska Medical Center said in an email Wednesday.

The hantavirus’s genome has been sequenced and is similar to strains that caused outbreaks in South America in the past, said Andreas Hoefer, an expert in microbiology and ...