In a study of 20 healthy volunteers, hand wiping with or without an alcohol-based solution was found inferior to hand rubbing with an alcohol-based solution in reducing microbial contmaination on hands.
Professor Kampf has published a very useful systematic review of the spectrum of virucidal activity of ethanol in solution or as commercially available products.
In a recent lancet article, Rook et al examine our place within the microbial world. They conclude that it amounts to a tug-of-war between managing beneficial microbes, excluding harmful ones, and diverting as much energy as available into other essential functions.
A new study shows that rubber ducks used as bath-time toys can be a reservoir of bacteria and fungi. The study showed that the liquid released when ducks were squeezed contained potentially pathogenic bacteria in 12 out of 19 toys studied.