article_snippet.sent: The researchers found by looking for genetic changes that had occurred.
article_snippet.sent: The researchers found several different .
article_snippet.sent: Dr Gemma Kay, the first author of the study, added that Dr Gemma Kay, the first author of the study analysis had revealed some of the tragic toll the disease was having at the time.
article_snippet.sent: She said: 'Poignantly, we found evidence of an intimate link between strains from in a middle-aged mother and She grown-up daughter, suggesting both family members died from this devastating infection.'