Periodic Reporting for period 4 - EcoImmuneCosts (Immunity in Ecology and Evolution: 'Hidden' costs of disease, immune function and their consequences for Darwinian fitness)

Is there such a thing as a harmless parasite infection? Why does the immune system induce costs and sometimes even attack our own body, leading to devastating outcomes? Why are we ageing, and why some faster than others? These are fundamental questions in biology and medicine...