Changes

'''Pertussis''', also known as "whooping cough," is a "bacterial infectious [[disease]] marked by a convulsive spasmodic cough, sometimes followed by a crowing intake of breath."<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#p</ref>

According to the  Centers for Disease Control and Prevention's Vaccines and Immunizations Glossary, '''Pertussis''', also known as "whooping cough," is a "bacterial infectious [[disease]] marked by a convulsive spasmodic cough, sometimes followed by a crowing intake of breath."<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#p</ref>

==References==

==References==