A day ahead of the 'precaution dose' being made available to all above the age of 18 years, the Centre on Saturday said that the private COVID-19 vaccination centres can charge only up to a maximum of Rs 150 as service charge for vaccination over and above the cost of the vaccine.

The Centre also said that the precaution dose will be of the same COVID-19 vaccine as the one used for the administration of the first and second doses.