"Management of this invasive plant could reduce the amount of people affected to about 52 million (from an estimated 77 million in Europe), while a scenario which sees very rapid plant invasion would increase the amount of people affected to around 107 million. The control of ragweed is important for public health and as an adaptation strategy against the impacts of climate change."
Hay fever is one thing, but the study may indicate that similar increases for allergies not included in the study are possible. "It is also important to add that climate change consequences will not be restricted to ragweed — and a range of other pollen-producing species are likely to be affected," he said. "Our methods provide a framework for other studies investigating the impacts of climate change on pollen allergy for other species."