Everyone tuned in to news media already knows about Zika spread by mosquitoes and the risk of fetal complications among pregnant women infected. Unfortunately, much more severe diseases such as Chikungunya and Dengue fever are also spread by mosquitoes.
New animal research suggests that itching and swelling at the site of mosquito bite allows virus to replicate faster, than when no itching and swelling is present. This means that in addition to mosquito repellents, using anti-inflammatory creams and sprays post-exposure may help reduce the risk of acquiring mosquito born viral infection. This finding has not been confirmed in human studies, but when used sparingly, anti inflammatory creams and sprays have no serious side effects. It may be a good extra measure to start applying them at the sites of bites right away, rather than waiting for swelling and itching to set in.