In connection with the European Immunization Week, ECDC releases data indicating an increase in cases of vaccine-preventable diseases such as measles and pertussis, after decreased levels during the COVID-19 pandemic.
This letter to the editor raises the issue of the adaptation of B. pertussis to vaccine selection pressure as one of the reasons for the increase number of cases of whooping cough reported in several countries.
The authors assess the risk of pertussis in children in California relative to the time since the fifth dose of DTaP from 2006 to 2011 (this period included a large outbreak in 2010).
This study, strong of an almost complete follow-up of all children born in Denmark from 2003 to 2008, provides evidence that the DTaP-IPV-HiB vaccine is not associated to an overall increased risk of febrile seizures and epilepsy.
Despite a reduction in pertussis among younger children and infants, rates of pertussis-related sickness and death remain high compared with rates for other vaccine-preventable diseases in England and Wales.
The authors describe the epidemiology of invasive Hib and nontype b H. influenzae infections in children <15 years of age in the United Kingdom from 1994 until 2008, and show that the resurgence in Hib disease during the years 1999-2003 did not affect the epidemiology of invasive nontype b H. influenzae disease in children, which provides further support against serotype replacement.
Starting 15 September 2011, ECDC will be coordinating the former EUVAC.NET network. It is a surveillance network covering measles, mumps, rubella, congenital rubella, pertussis and varicella EU Member States and three countries of the European Economic Area. Data will be hosted by the European Surveillance System (TESSy) at ECDC.