Even when tins and packets of powdered infant formula are sealed, they can sometimes contain bacteria such as Cronobacter sakazakii (formerly known as Enterobacter sakazakii) and, more rarely, Salmonella. Although these bacteria are very rare, the infections they cause can be life-threatening.
To reduce the risk of infection, make up each feed as your baby needs it, using boiled water at a temperature of 70ºC or above. Water at this temperature will kill any harmful bacteria that may be present.
Make up feeds, one at a time, as your baby needs them. Always use boiled water at a temperature of at least 70ºC, but remember to let the feed cool before you give it to the baby. Bacteria multiply very fast at room temperature. Even when the feed is kept in a fridge, bacteria can still survive and multiply, although they do this more slowly. The risk of infection increases over time so that is why it is important to make up the feed only as your baby needs it.
