We have MR Vaccine for a campaign that had to be suspended due to current COVID-19 circumstances. These vaccines had been stored between minus 15 and minus 25 deg C at the Primary Store. Later, Vaccines were supplied to the District stores where they had been stored between plus 2 and 8 deg C.
We want to store them back into Primary Store between minus 15 and minus 25 deg C again. The vaccine has a valid shelf life, expiry, and VVM are OK. Can anyone kindly advise if storing them back to a minus temperature from a positive temperature would cause any harm to the MR Vaccine?