Progress Toward Rubella Elimination and CRS Prevention in Europe Symposium
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PROCEEDINGS The Symposium Organizing Committee would like to thank the following organizations for their support of the Progress Toward Rubella Elimination and CRS Prevention in Europe symposium: Abbott Diagnostics Albert B. Sabin Vaccine Institute BioMerieux DiaSorin World Health Organization Regional Office for Europe March of Dimes Foundation Merck Roche sanofi-pasteur Serum Institute of India U.S. Centers for Disease Control and Prevention 2 Progress Toward Rubella Elimination And CRS Prevention in Europe Proceedings Table of Contents Executive Summary .............................................................4 Introduction ..........................................................................7 SESSION I: Measles Elimination in Europe ..................8 SESSION II: Background Information ..........................19 SESSION III: Diagnostics................................................24 SESSION IV: Global Epidemiology ................................28 SESSION V: Burden of Rubella and CRS in Europe ...31 SESSION VI: Country Experiences ................................36 SESSION VII: Strategies, Policy Implementation and Documentation of Rubella/CRS .......41 SESSION VIII: Surveillance Strategies ............................47 SESSION IX: Issues to be Addressed ...........................52 Concluding Remarks .........................................................57 Speakers .............................................................................58 Delegates ............................................................................59 Rome, Italy, 8-10 February 2012 3 Foreword From 8-10 February 2012, over 150 people from 47 countries met in Rome, Italy, to discuss the strategies and work needed to eliminate measles and rubella from the European region by 2015. It was the first major global meeting on rubella in 40 years. Participants shared lessons from the successes already achieved in rubella elimination around the world. By bringing together public health authorities and pediatric societies, the conference embodied the types of partnerships that will support successful elimination campaigns. Participants tackled the complexity of the immunization enterprise – from the basic sciences to the laboratories, from the role of clinicians to the community and the media. As Dr. Louis Cooper said, “It may seem on the surface very simple to vaccinate a child, but the truth is that it is exceedingly complex.” Symposium Organizing Committee Dr. Louis Cooper, American Academy of Pediatrics and International Pediatric Association Dr. Nedret Emiroglu, World Health Organization Regional Office for Europe Dr. Michael Katz, March of Dimes Dr. Stanley Plotkin, University of Pennsylvania Dr. Ciro de Quadros, Albert B. Sabin Vaccine Institute Dr. Maria Grazia Revello, Fondazione IRCCS Policlinico San Matteo Dr. Susan Reef, U.S. Centers for Disease Control and Prevention Executive Summary The rubella virus threatens children and adults, but poses the highest risk to pregnant women and their developing fetuses. Once known as “German measles,” rubella infection early in pregnancy may result in miscarriage, fetal death, or the birth of an infant with Congenital Rubella Syndrome (CRS). CRS can cause blindness, deafness, mental retardation, heart defects and a range of other conditions from diabetes to autism. An estimated 112,000 babies around the world are born with CRS every year. Many of these children need a life-time of medical and social support. Although the European Region has significantly reduced cases of rubella and of CRS, it has not eliminated them. Babies are still born with the condition, and expectant mothers must still make irrevocable choices when learning of their infected status. Yet, this situation is completely avoidable. For more than 40 years, a vaccine has been available to prevent rubella and CRS. The Americas have succeeded in eliminating both rubella and CRS through mass immunization. “In countries like the U.S., where we’ve eliminated congenital rubella, we’ve been able to close schools of the deaf,” Dr. Louis Cooper told the gathering. Rubella vaccine is most commonly administered as part of combination vaccines with measles (MR vaccine) or with measles and mumps (MMR vaccine). The use of measles vaccine has already reduced measles deaths, which fell 78 percent between 2000 and 2008. Yet, this disease continues to claim the lives of nearly 164,000 people a year, and sporadic outbreaks and imported cases threaten the progress already made. Thus, the use of rubella- and measles-containing vaccines could eliminate these two viruses and their huge burdens of disease, death, and disability. 4 Progress Toward Rubella Elimination And CRS Prevention in Europe Proceedings In 2010, the European Region set a goal of eliminating measles and rubella and preventing CRS by 2015. Dragan Jankovic, with the World Health Organization Regional Office for Europe, described four strategies for achieving this goal: • Reach at least 95 percent coverage of the population with two doses of measles-containing vaccine and one dose of rubella-containing vaccine (RCV); • Use mass campaigns and other supplementary vaccination activities to provide “catch-up” vaccination and reach everyone who is susceptible; • Establish case-based surveillance with strong laboratory involvement component; and • Make evidence-based information on immunization’s benefits and risks available to experts and the public. Throughout the two-and-a-half-day meeting, pediatricians, epidemiologists, and others involved in public health and health policies shared information on progress in implementing these strategies in the European Region, and the challenges that must be met to eliminate rubella. Presenters reported on significant progress already made: between 2001 and 2010, the WHO Europe Region achieved a 99 percent decline in reported cases of rubella. Major advances took place in the Central and Eastern parts of the Region, and the Newly Independent States. Nonetheless, outbreaks continue, and some countries have coverage of less than 80 percent. Pockets of susceptible populations are scattered throughout the region, and large gaps in surveillance mean that the region does not yet have an accurate picture of the extent of rubella and CRS. Every country is different, however. Representatives from Italy, Russia, Finland, Poland and France summarized their own histories, current status and challenges in rubella elimination. Consistent themes emerged in global, regional and national reports. One of the key challenges countries face is the need to significantly improve surveillance. This surveillance must be case-based, allowing the investigation of contacts, identification of cause (e.g. importation, failure to vaccinate, or vaccine failure); identification of populations at risk; and ensuring a public health response. Strong surveillance is also essential for the verification of elimination. Despite the importance of case-based surveillance reporting, in 2011 in the WHO European Region, it was provided by only 28 countries; 10 provided aggregate data and 15 provided no data. Once potential cases are identified, they need to be laboratory confirmed. But in 2010, only 22 percent of reported cases were confirmed. Speakers addressed the challenges of diagnosis, the confounding factors in assessing immune status, and the opportunities presented by molecular epidemiology. Country representatives also shared lessons from their vaccination experience, including the impact of targeting girls only for vaccination. Countries including Poland, Lithuania, Finland and France reported on the limitations of their initial approaches of only vaccinating girls and young women. This left circulation of the virus intact, outbreaks affected unvaccinated boys and men, and pregnant women who had not been vaccinated remained vulnerable to circulating virus. More recently, countries have been grappling with the need for mass catch-up campaigns that vaccinate older children, adolescents and even adults. Some fear that limited resources and competing public health demands may stand in the way, despite the importance of such campaigns for achieving elimination. Another common challenge was the ever-growing numbers of vaccine skeptics. “Vaccine safety is increasing, vaccine coverage is increasing, disease incidence is decreasing, and then public trust is decreasing,” said Pier Luigi Lopalco from the European Centre for Disease Prevention and Control (ECDC). The source of opposition is not only largely unfounded fears about vaccine safety, but also suspicions aroused by anything that appears to be a major change in policy from the top. Therefore, vaccine campaigns can bring their own headwinds, said Jan Bonhoeffer from the Brighton Collaboration. Discussants addressed the need for the public health community to utilize some of the same social and digital media tools now used so adroitly by vaccine opponents, and the need for trusted health providers, starting with pediatricians, to more visibly support the need for vaccination. To do so, however, they need access to the most up-to-date and credible evidence of vaccine impacts, safety and risks. Rome, Italy, 8-10 February 2012 5 The meeting also considered global issues of vaccine cost-effectiveness and vaccine demand, supply and cost. The cost-effectiveness of rubella vaccine is apparent. Jon Kim Andrus from the Pan American Health Organization (PAHO) reported on studies in the PAHO region that show the benefit-cost ratio was