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Police in northern Mexico arrested six people Wednesday for allegedly trafficking in fake coronavirus vaccines.

"We have direct evidence that fraudulent vaccines... were sold for up to 40,000 pesos (around $2,000) per dose", said Assistant Health Secretary Hugo Lopez-Gatell at a press conference.

Professor Adam Finn, from the University of Bristol and a member of the Joint Committee on Vaccination and Immunisation (JCVI), said "everything's moving in the right direction" when it comes to how jabs are working.

This he stated while talking on a private news channel.

The PEI said it had been notified of reports from some clinics of increased sickness among personnel given the AstraZeneca vaccine, with reactions including fever, chills, headache, muscle and limb pain, and a general feeling of illness.

"You don " t play around with health, and in these moments of pandemic, nobody should be profiteering", said Public Safety Secretary Rosa Icela Rodríguez.

"We continue to call for COVID19 vaccine developers to submit their dossiers to World Health Organization for review at the same time as they submit them to regulators in high-income countries", he said.

Each of the now authorized COVID-19 vaccines requires two doses for maximum effectiveness.

Experts have long anxious about the criminal gangs in Mexico attempting to steal, hijack, or counterfeit vaccines or medications during the pandemic. There have been hijackings or thefts of medicines and oxygen, but this is the first instance of criminal activity related to vaccines.

Mexico began its vaccination drive on December 24, starting with medical personnel and a small number of teachers in the east of the country. He also urged people above the age of 65 to start registering themselves for the vaccine for the second phase, which he said would start from March.