Fig. 2
Geographical distribution of OECD and non-OECD countries, including number of included studies per countrya (OECD countries shown in blue) [12]. Faecal carriage of E. coli resistant to ampicillin for each reporting country are shown in red. Authors own map. a One study was conducted in the USA, but also reported resistance data from Venezuela and China, this study therefore appears three times [29]