Complex sentence: Many of these animals recover from the disease and become carriers; these are potential sources of contagion despite showing no signs of disease The bacterium infects the host by sticking to its cells using trimeric autotransporter adhesins (TAAs).
Split into simpler sentences: Many of these animals recover from the disease and become asymptomatic carriers. It infects the host by sticking to the cells of the host using trimeric autotransporter adhesins (TAAs).