Not medical advice: The early symptoms of whooping cough/pertussis are generally mild and include nasal congestion, runny nose, watery eyes, sneezing, mild fever and a dry cough.
As the disease progresses, about a week or two after the first symptoms, more severe symptoms will appear, including uncontrollable coughing. The coughing fits usually end in a high pitched “whoop” sound. Additionally, as the airways are blocked with thick mucus, one may experience vomiting, extreme fatigue or a red or blue face.
The CDC states that pertussis outbreaks occur about every 3 to 5 years. Babies are particularly vulnerable to having severe complications from the disease.