CAV2 and infection: miR-29a mediated CAV2 regulation in animals significantly differed between Salmonella infected subjects and controls only at 3 d p.i. It is known that Salmonella are able to replicate in infected enterocytes and epithelial turnover and desquamation can return bacteria to the lumen leading to new infection of epithelial cells and/or colonisation of the intestine [2].