Supercharged "clones" trigger the re-emergence of scarlet fever

Supercharged "clones" trigger the re-emergence of scarlet fever

Supercharged "clones" trigger the re-emergence of scarlet fever

A University of Queensland-led team of international researchers says supercharged "clones" of the bacteria Streptococcus pyogenes are to blame for the resurgence of the disease, which has caused high death rates for centuries.