The Inspector-General of Police, Mr Mohammed Abubakar, has ordered special security for all medical personnel involved in the ongoing routine immunisation.
This is contained in a statement issued on Sunday in Abuja by CSP Frank Mba, the Deputy Force Public Relations Officer.
The measure was sequel to the recent attacks on health workers in Kano.
The News Agency of Nigeria (NAN) recalls that unidentified gunmen Friday morning shot dead nine female health workers in two separate attacks during a routine polio immunization.
The attacks reportedly took place at Filin Kashu and Shargalle Health Centre (in Hayen Hotoro) both in Kano metropolis.
The gunmen, who came in a tricycle, shot dead three women at Filin Kashu and injured three others, while another set of gunmen also attacked Shargalle Health Centre and killed seven women.
The statement said that the special security arrangement also covered medical personnel involved in other special medical tasks.
The statement directed Commissioners of Police in the states and Assistant Inspectors-General of Police, especially those in charge of the northern states, to devise security strategies to prevent further attacks.