According to the consultant, there is no medical reason indicating that deliveries are more at night.
The NMA is also consulting with “relevant offices” to clarify consultant pharmacists’ appointment as a new public service cadre.
Opposition leader Keir Starmer praised the decision to conduct an inquiry but urged for it to be carried out sooner.
“It takes a lot of funds to train a medical doctor, nurse or even a laboratory technologist or physiotherapist. So, we want to retain them here.”
The minister said the N10 billion earmarked by the National Assembly for that purpose was intact.
“We would like to state our appreciation to the Nigerian citizens for the cooperation they are providing to our vaccination teams across the country.”
Ms Edu said the drones would ensure that medical supplies, drugs, vaccines could be delivered to health centres in the shortest possible time.
The investigation followed alleged mismanagement, including failure of professional standards.
The commission invites the public to volunteer information that may assist in the investigation.
State governments have also been advised to introduce mobile court system to punish citizens who may flout the restriction order.