The report concludes that global warming favours the spread of disease especially if that warming leads to extreme weather events like Hurricane Katrina or the killer heat wave that struck France a few summers ago.
Since this term is totally without meaning, she can then claim that the latest forest fire, the latest hurricane, the latest drought, flood, snow, cold snap, heat wave, or tornado were cause by man, and that scientist X said so.
The heat wave that struck Europe in 2003 claimed over 30, 000 lives, while Hurricane Katrina, which devastated New Orleans in 2005, gave us a glimpse of what the future might be like.