Eva A. Montuori, Spain

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Online Abstracts Vaccines - Impact of Vaccine programs and Serotype Replacement C2 Impact of Vaccine programs and Serotype Replacement

TRENDS IN INVASIVE PNEUMOCOCCAL DISEASE (IPD) IN ADULTS OF 65 YEARS OR OVER, ITALY, 2012-2017

Presentation Type
Abstract_Submission
Presentation Topic
C2 Impact of Vaccine programs and Serotype Replacement

Presenter Of 1 Presentation

TRENDS IN INVASIVE PNEUMOCOCCAL DISEASE (IPD) IN ADULTS OF 65 YEARS OR OVER, ITALY, 2012-2017 (ID 1184)

Session Name
Vaccines - Impact of Vaccine programs and Serotype Replacement

Abstract

Background

The paediatric heptavalent pneumococcal conjugate vaccine (PCV7) was licensed in 2001 and added to the National Immunisation Programme (NIP) in 2005. The 13-valent conjugate vaccine (PCV13) entered the paediatric NIP in 2012. PCV13 adult vaccination started in 2012 for at-risk population in some regions and introduced in NIP in 2017 sequentially with the 23-valent polysaccharide (PPV23), used before in at-risk and older people.

Methods

Cases were reported through the European Centre for Disease Prevention and Control surveillance system. IPD serotype specific counts were aggregated into PCV13-, PCV13 non-PCV7-, 20-valent conjugate vaccine (PCV20) non-PCV13-, PPV23-, and PPV23 non-PCV13-type groups. The percentage change in annual number of cases was estimated using linear regression analysis of the log of annual number of cases.

Results



During 2012-17, there was an average annual increase of 34% for PCV20 non-PCV13- (95%CI 20.4 to 48.8; p=0.002), of 16% for PPV23- (95%CI 7.5 to 25.1; p=0.006), and of 31.5% for PPV23 non-PCV13- (95%CI 18.1 to 46.4; p=0.002)-, without significant changes in PCV13-, PCV13 non-PCV7-type groups

Conclusions

table for abstract_italy_corrected_eposter (1).jpg

Implementation of the paediatric PCV13 programme, despite high coverage, does not appear to be associated with changes in PCV13-type IPD in adults. Reductions may be achieved with direct immunisation with PCV13 or next-generation vaccine (PCV20)

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Author Of 1 Presentation

TRENDS IN INVASIVE PNEUMOCOCCAL DISEASE (IPD) IN ADULTS OF 65 YEARS OR OVER, ITALY, 2012-2017 (ID 1184)

Session Name
Vaccines - Impact of Vaccine programs and Serotype Replacement

Abstract

Background

The paediatric heptavalent pneumococcal conjugate vaccine (PCV7) was licensed in 2001 and added to the National Immunisation Programme (NIP) in 2005. The 13-valent conjugate vaccine (PCV13) entered the paediatric NIP in 2012. PCV13 adult vaccination started in 2012 for at-risk population in some regions and introduced in NIP in 2017 sequentially with the 23-valent polysaccharide (PPV23), used before in at-risk and older people.

Methods

Cases were reported through the European Centre for Disease Prevention and Control surveillance system. IPD serotype specific counts were aggregated into PCV13-, PCV13 non-PCV7-, 20-valent conjugate vaccine (PCV20) non-PCV13-, PPV23-, and PPV23 non-PCV13-type groups. The percentage change in annual number of cases was estimated using linear regression analysis of the log of annual number of cases.

Results



During 2012-17, there was an average annual increase of 34% for PCV20 non-PCV13- (95%CI 20.4 to 48.8; p=0.002), of 16% for PPV23- (95%CI 7.5 to 25.1; p=0.006), and of 31.5% for PPV23 non-PCV13- (95%CI 18.1 to 46.4; p=0.002)-, without significant changes in PCV13-, PCV13 non-PCV7-type groups

Conclusions

table for abstract_italy_corrected_eposter (1).jpg

Implementation of the paediatric PCV13 programme, despite high coverage, does not appear to be associated with changes in PCV13-type IPD in adults. Reductions may be achieved with direct immunisation with PCV13 or next-generation vaccine (PCV20)

Hide