Varicella prevention in Costa Rica: impact of a one-dose schedule universal vaccination

Ávila-Agüero, María Luisa; Ulloa‐Gutiérrez, Rolando; Camacho-Badilla, Kattia; Soriano-Fallas, Alejandra; Arroba-Tijerino, Roberto; Morice-Trejos, Ana

doi:10.1080/14760584.2017.1247700

Cited by 23 publications

(27 citation statements)

References 13 publications

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“…All studies have shown impressive reductions in disease incidence compared with the pre-vaccination era. After one-dose programs, reductions up to 74% have been recorded [56]. Whereas reductions exceeding 90% have been recorded after two-dose schedules [37,57,58].…”

Section: Evidence For Varicella Vaccinationmentioning

confidence: 99%

Varicella vaccination - the global experience

Wutzler

Bonanni

Burgess

et al. 2017

Expert Review of Vaccines

140

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Introduction Varicella, although a frequently benign childhood disease, nevertheless represents a considerable health burden. WHO recommends including varicella vaccines in universal routine vaccination programs, and maintaining coverage >80%. Many countries have successfully introduced varicella vaccination and have benefited from lower disease burden, but many others have not adopted the vaccine. Reasons include cost commitment for a ‘mild childhood disease’ or concerns that vaccination will shift varicella to older age groups or increase herpes zoster incidence. Areas covered This literature review summarizes the effectiveness and epidemiological impact of varicella immunization programs. Expert commentary Varicella vaccines are immunogenic with acceptable safety profiles. One and two dose schedules are highly effective against varicella and large reductions in disease incidence, particularly moderate-severe disease, have been widely reported. There is currently no evidence to suggest that the introduction of varicella vaccination results in a shift of varicella disease burden to older age groups. Although epidemiological studies have shown an increased incidence of herpes zoster since the vaccines were launched, there are many other contributing factors, and indeed, this secular trend was evident before their introduction. In conclusion, varicella vaccination easily fits into existing immunization programs and significantly reduces the often underestimated burden of varicella.

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Section: Evidence For Varicella Vaccinationmentioning

confidence: 99%

Varicella vaccination - the global experience

Wutzler

Bonanni

Burgess

et al. 2017

Expert Review of Vaccines

140

View full text Add to dashboard Cite

show abstract

“…Increasing the varicella vaccination coverage rate significantly decreased the incidence of the disease and hospitalizations due to complications. Both direct and indirect effects of universal varicella vaccination have been reported elsewhere . The effectiveness of the single‐ and double‐dose varicella vaccines was 80% (range, 20–100%) and 93% (range, 84–98%), respectively .…”

Section: Discussionmentioning

confidence: 57%

“…Both direct and indirect effects of universal varicella vaccination have been reported elsewhere. [17][18][19][20][21][22][23][24][25] The effectiveness of the single-and double-dose varicella vaccines was 80% (range, 20-100%) and 93% (range, 84-98%), respectively. 26 The single-dose varicella vaccination program was able to prevent mortality while a double-dose was able to prevent morbidity.…”

Section: Discussionmentioning

confidence: 99%

Trends in varicella and mumps vaccination rates in children under 3 years of age in a tertiary children's hospital in Japan

Morikawa

Morino

Ito

et al. 2019

Pediatrics International

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Background In Japan, the voluntary vaccination rate is not known accurately. Although two doses of the measles and rubella vaccines have been part of the universal vaccine program since 2006, the varicella vaccine was added in October 2014 while the mumps vaccine still remains voluntary. The aim of this study was to evaluate trends in the live measles, rubella, varicella and mumps vaccination rates in Japan. Methods This retrospective cohort study was conducted at Tokyo Metropolitan Children's Medical Center between October 2012 and December 2016. Patients aged 1–2 years who were admitted to the Department of General Pediatrics were enrolled. The trend in the vaccination rate against measles, rubella, varicella, and mumps was examined. Results The measles and rubella vaccination rate was 80–90%. The varicella vaccination rate in the second quarter of 2012, the third quarter of 2014, and the fourth quarter of 2016 was 34.6%, 67.1%, and 80.7%, respectively. The mumps vaccination rate in the second quarter of 2012, the third quarter of 2014, and the fourth quarter of 2016 was 27.6%, 59.5%, and 61.8%, respectively. Conclusions The varicella and mumps vaccination rate improved until 2014 despite the fact that they were voluntary vaccinations. After varicella vaccination was added to the universal vaccination program, the varicella vaccination rate continued to improve. The mumps vaccination, which was not included, failed to improve, suggesting that the universal vaccination program contributed to increasing the uptake of the vaccines it includes.

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“…The vaccination strategy used in our region has significantly reduced the burden of disease, as seen in other countries. [13][14][15][16][17][18] However, there was a slight increase in the incidence of all ages after the exclusion of the dose at 15 months from the public funded vaccination schedule. This modification was made in the context of laws to reduce health expenditure and seeking cohesion with the vaccine schedules of other Autonomous Communities.…”

Section: Discussionmentioning

confidence: 99%