Abstract
Pregnant people with a Rhesus-negative blood group are at risk of developing antibodies against Rhesus-positive foetal red blood cells (sensitisation) if foetal cells cross into the maternal circulation. Sensitisation can affect current or subsequent pregnancies by causing haemolytic disease of the foetus and newborn, which may lead to complications including foetal anaemia and neonatal jaundice, as well as foetal morbidity and mortality.