IFI27 and infection: A recent microarray analysis of the intestinal epithelial cells transcriptional response in a study based on a C. parvum neonatal piglet infection model showed that the expression of the IFI27 gene at peak infection (days 3–5) was significantly upregulated [42], while another study showed that a significant elevation in IF127 gene expression in human small intestinal enteroids at 72 h of infection but interestingly not at 24 h [43]; however, the role of IFI27 gene upregulation has not been elucidated.