PTI.The Committee examined five such cases that took place on February 5, eight cases on March 9 and 18 cases on March 31.As per data in the first week of April, the reporting rate is 2.7 deaths per million vaccine doses administered and 4.8 hospitalisations per million vaccine doses administered, the report stated.Adverse Event Following Immunization (AEFI) is defined as ‘any untoward medical occurrence which follows immunization and which does not necessarily have a causal relationship with the usage of the vaccine.