 Wolbachia is a bacterium that has been shown to be effective in controlling the spread of certain diseases carried by mosquitoes. In this study, researchers examined the effects of Wolbachia on the mosquito's gene expression over time after being introduced into the wild. They found that the mosquitoes were still expressing many of the same genes as before, but there was also some evidence of changes in expression levels. This suggests that Wolbachia may continue to be effective in controlling disease transmission for longer periods of time than previously thought. This article was authored by BMC Randicoa Malaciriapa, Bixing Wang, Piranha Ross, and others.