Get a flu vaccination:
[Chris Reiber at Binghamton University in New York and Janice Moore at Colorado State University in Fort Collins] have found that people were far more sociable in the 48 hours following their annual flu vaccination than in the 48 hours preceding it. “This is highly suggestive that the virus is manipulating human behaviour for its own ends; that is, to spread itself to other potential hosts,” says Reiber. Another possibility, however, is that humans subconsciously become more sociable in anticipation of needing help and support ahead of disease.
The main article suggests there may be a link between Toxoplasma gondii and schizophrenia.
NewScientist (30 May 2015, paywall)
