Measles vaccine efficacy during an epidemic in 1998 in the highly vaccinated population of Poland

Janaszek, W; GAY, N. J.; W, Gut

doi:10.1016/s0264-410x(02)00482-6

Cited by 33 publications

(14 citation statements)

References 9 publications

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“…In particular, capturing both direct and indirect effects of vaccination, we estimated that annual vaccination in the United States averted 135 million cases of influenza from 2005 to 2013. It is notable that such impact is possible with the use of influenza vaccines that have a moderate level of coverage and a measured VE of typically 60% or less (34), which would also appear moderate, particularly in the context of other vaccines (e.g., for measles) (35,36). However, an important point is that, in comparison with these diseases, the effective reproduction number of influenza is relatively low, even in the absence of vaccination.…”

Section: D Pr I T Pr Imentioning

confidence: 99%

Estimating Direct and Indirect Protective Effect of Influenza Vaccination in the United States

Arinaminpathy¹,

Kim²,

Gargiullo³

et al. 2017

American Journal of Epidemiology

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With influenza vaccination rates in the United States recently exceeding 45% of the population, it is important to understand the impact that vaccination is having on influenza transmission. In this study, we used a Bayesian modeling approach, combined with a simple dynamical model of influenza transmission, to estimate this impact. The combined framework synthesized evidence from a range of data sources relating to influenza transmission and vaccination in the United States. We found that, for seasonal epidemics, the number of infections averted ranged from 9.

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Section: D Pr I T Pr Imentioning

confidence: 99%

Estimating Direct and Indirect Protective Effect of Influenza Vaccination in the United States

Arinaminpathy¹,

Kim²,

Gargiullo³

et al. 2017

American Journal of Epidemiology

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“…Mathematical models have been used to determine the ability of an imperfect vaccine to control other infectious diseases, and some of the findings have been corroborated by clinical studies (see [14,16,19,20,27] for general references). There have been several published mathematical models suggested for the transmission dynamics of influenza [4,13,18,23,36], but to our knowledge none has fully analyzed the impact of an imperfect vaccine (see also [24] and the references therein).…”

Section: Table 1 Influenza Viral Strains and Outbreaks And Epidemicsmentioning

confidence: 99%

A Vaccination Model for Transmission Dynamics of Influenza

Alexander¹,

Bowman²,

Moghadas³

et al. 2004

SIAM J. Appl. Dyn. Syst.

150

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Abstract. Despite the availability of preventive vaccines and public health vaccination programs, influenza inflicts substantial morbidity, mortality, and socio-economic costs and remains a major public health problem. This is largely because the protection conferred by current vaccines is dependent on the immune status of the individual, ranging between 70%-90% in healthy young adults and 30%-40% among the elderly and others with weakened immune systems. Whether a strategic use of such partially effective vaccines can control the spread of influenza within a certain population is unknown but of great public health interest. To address this question, we construct a deterministic mathematical model to study the transmission dynamics of influenza. The model is analyzed qualitatively to determine criteria for control of an influenza epidemic and is used to compute the threshold vaccination rate necessary for community-wide control of influenza. Using two specific populations of similar size, an office and a personal care home, our model shows that the spread of influenza can be controlled if the combined effect of the vaccine efficacy and vaccination rate reaches a threshold determined by the duration of infectiousness and the rate of contact between infected and susceptible individuals.

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“…The two-dose strategy has eliminated measles without indigenous measles transmission chain [Janaszek et al, 2003;Meissner et al, 2004]. Thus, the proportion of countries offering children a second dose of measles vaccine is increasing, and 168 (88%) countries implement the two-dose strategy [WHO, 2006].…”

Section: Introductionmentioning

confidence: 99%

Modified adult measles in outbreaks in Japan, 2007–2008

Nagai¹,

Xin

Yoshida

et al. 2009

Journal of Medical Virology

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Different genotypes of C1, D3, D5, and H1 were isolated in outbreaks of 1984, 1987-1988, 1991-1993, and 2001, respectively, when the previous circulating genotype was replaced successively by a new genotype, through molecular studies of measles since 1984 in Japan. In March 2007, several patients with measles were observed in outpatient clinics, who were all young adolescents in high school and university students. The outbreak expanded subsequently throughout Japanese districts in May and is still ongoing in 2008. Reverse transcription loop-mediated isothermal amplification (RT-LAMP) was used to detect the measles genome from 18 clinical samples obtained from patients suspected of modified measles infection with a very mild febrile illness. The measles genome was detected in nine patients by reverse transcription polymerase chain reaction (RT-PCR) and in 12 patients by RT-LAMP. Six measles strains were isolated in the 2007-2008 outbreak and identified as the D5 genotype (MVi/Bangkok.THA/93 type) different from the D5 sub-cluster (MVi/Palau.BLA/93 type) isolated in 1990-2005. Similar Bangkok type D5 strains were isolated in Phnom Penh in 2002 and in Taiwan in 2003, suggesting that the D5 strains might have been introduced via South East Asia, rather than resulting from the accumulation of mutations in the D5 strains of 1990-2005. One D9 strain was isolated from a sporadic case in Aichi in 2006. There was no difference in the antigenicity of the D9 and D5 strains in comparison with the vaccine strain. Infrastructure of systematic laboratory-based surveillance system should be established in order to confirm measles virus infection in Japan.

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Measles vaccine efficacy during an epidemic in 1998 in the highly vaccinated population of Poland

Cited by 33 publications

References 9 publications

Estimating Direct and Indirect Protective Effect of Influenza Vaccination in the United States

Estimating Direct and Indirect Protective Effect of Influenza Vaccination in the United States

A Vaccination Model for Transmission Dynamics of Influenza

Modified adult measles in outbreaks in Japan, 2007–2008

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