Is a sinus infection contagious? My baby sounds congested now, did I get him sick? I have baby saline, what else can I do? 3month old

Sinus infection. The sinus infection is not necessarily contagious as a sinus infection BUT the bacteria or virus that causes it can be transmitted to the baby. To treat congestion in a young infant: elevate the head of the crib where the baby sleeps or use the car seat, saline nasal drops followed by suctioning, extra pedialyte to liquefy the mucous. Good Luck!