RSV is a viral infection that most commonly occurs in the winter, is associated with acute respiratory distress and is occasionally fatal, particularly in the very young. Difficulty breathing, coughing and wheezing are the most common symptoms associated with it. The severity of symptoms varies from case to case ranging from mild to severe. For more information and appropriate diagnosis and treatment, see your doctor. Whooping cough is a very contagious bacterial disease caused by Bordetella pertussis .
Whooping cough has three stages.
It begins with sneezing, watery eye, loss of appetite and coughing at night. Excessive mucus may be coughed up during this time. Vomiting may also be present due to the large amount of mucus. The convalescent stage begins at about the 4th week as the coughing and vomiting diminish. The illness generally lasts around 7 weeks, but the coughing may return during any upper respiratory infections for several months afterwards.