A fifth vaccination clinic opened its doors for the first time earlier at the QEQM Hospital in Margate.
The four other vaccination centres are at the sports centre at the University of Kent in Canterbury, the Kent and Canterbury Hospital in Canterbury, Faversham Health Centre and Vicarage Lane Clinic in Ashford.
More than 11,033 people have also been given antibiotics since the outbreak became public knowledge on Sunday.
Prof Shamez Ladhani, from UK Health Security Agency, told the BBC he was confident the outbreak was being controlled.
He said: “It’s actually doing exactly how we would expect these kind of outbreaks to do.
“We’re not talking about flu or Covid, where the virus designs itself to be spread through coughing and sneezing.
“The messaging is that the general public is really only at baseline risk.”