Babies are prone to sickness including colic, sniffles and colds. Mild colds are normal for infants and are typically not something to be too concerned about. A baby’s immune system is immature and takes a while to build up. However, there is a difference between a baby with a cold and a baby who needs medical attention from urgent care in San Jose. How Sick is My Baby? Here’s what you should be looking for to gauge how ill your infant is. Over-Crying You know your baby better than anyone. All babies cry and whine – it’s the only way…