A first case of <i>Mixta calida</i> bacteremia and meningitis in a 5-week old child

<i>Mixta calida</i>, previously known as <i>Pantoea calida</i>, was initially isolated from powdered infant milk in 2010. It falls within the <i>Erwiniaceae</i> family (class: Enterobacterales). While <i>Mixta calida</i> was traditionally regarded as non-pathogenic, we now present a case of <i>Mixta calida</i> bacteraemia and meningitis in a 5-week-old child, successfully treated with cefotaxime. This case, in contrast to prior reports with potential contamination issues, is the first to offer compelling evidence of <i>Mixta calida'</i>s pathogenicity in humans.