One myth is that cold weather can make you sick, but that is not true. Being cold itself does not cause illness. However, when it is colder outside, children tend to spend more time indoors together, easily passing germs and infections. So if you're going out in a long-sleeved T-shirt and a winter jacket, add a sweater to your baby's long-sleeved outfit, plus a bunting or a coat. Top it off with mittens, a snug-fitting hat, and warm boots if the bunting doesn't cover his feet. Keep your baby away from people who are obviously sick and encourage older kids to stay away from people who have obvious cold or flu.