Since starting daycare at 1 year old, my 16-month-old son has had at least one fever spike per month, sometimes two per month, is this normal?

It is normal for young children to experience frequent bouts of fever as their immune system develops and they are exposed to various viruses and bacteria. This is a natural process that helps strengthen their immune system. It is important to ensure that your child's vaccinations are up to date and to monitor their symptoms. If the symptoms are mild and disappear quickly, it is generally a good sign.