Mule Name Meaning. English: from a medieval personal name, perhaps Old English Mul (from Old English mul âmuleâ, âhalfbreedâ). This was the name of a brother of Ceadwalla, King of Wessex (died 675), and is also found as a place name element.
1 The whooping cough booster is a combination vaccine with tetanus and diphtheria. 2  The vaccine is called Tdap. 3  Once an adult gets the Tdap vaccine, he or she should get the Td (tetanus and diphtheria) booster every 10 years from then on.
1 Td: The Td vaccine is the one people commonly think of when they think of getting their tetanus booster. 2  Like Tdap, it contains lesser quantities of diphtheria protein to reduce the occurrence of side effects in adults. 3  It was once recommended that adults get this vaccine every 10 years.