scholarly journals The impact of Australia's measles control programme over the past decade

2004 ◽  
Vol 133 (1) ◽  
pp. 99-105 ◽  
Author(s):  
H. F. GIDDING
Keyword(s):  
Vaccination Schedule ◽  
Control Programme ◽  
Childhood Vaccination ◽  
Mmr Vaccine ◽  
School Aged Children ◽  
Measles Elimination ◽  
Source Case ◽  
Catch Up ◽  
The Impact ◽  
Control Campaign

We reviewed measles surveillance data for 1993–2002 to determine the impact of Australia's measles control initiatives. The introduction of a second dose of measles–mumps–rubella (MMR) vaccine for 10- to 16-year-olds in 1993 was followed by marked reductions in measles notifications and hospitalizations, especially in the targeted age group. Further rate reductions were achieved following the Measles Control Campaign (MCC) in 1998, which involved a catch-up campaign for primary-school-aged children and lowering the age for the second dose of MMR vaccine to 4 years. Since the MCC, outbreaks have continued to occur, but most had a source case who was infected overseas, which suggests that indigenous transmission has been interrupted. In addition, a greater proportion of cases have been in adults although infants aged <5 years still had the highest rates. In conclusion, Australia is making good progress towards measles elimination. However, as in other countries, this progress can be sustained only by maintaining high vaccination coverage with the routine childhood vaccination schedule.

scholarly journals Measles resurges in Italy: preliminary data from September 2007 to May 2008

2008 ◽  
Vol 13 (29) ◽  
Author(s):  
A Filia ◽  
M De Crescenzo ◽  
T Seyler ◽  
A Bella ◽  
M L Ciofi Degli Atti ◽  
...  
Keyword(s):  
Incidence Rate ◽  
Vaccination Coverage ◽  
Preliminary Data ◽  
Vaccination Schedule ◽  
National Average ◽  
Childhood Vaccination ◽  
Mmr Vaccine ◽  
Regional Variability ◽  
Measles Elimination ◽  
Measles Vaccination

Following an incidence rate of 1/100,000 inhabitants in 2006 [1], Italy has been facing an upsurge of measles cases since September 2007, with outbreaks being reported in various regions. In Italy, measles vaccination is currently offered free of charge as combined measles-mumps-rubella (MMR) vaccine. The current national vaccination schedule recommends two doses of MMR vaccine, given respectively at 11-12 months and 5-6 years of age. Although childhood vaccination coverage has increased in recent years, reaching the national average of 88% in 2006 (source: Ministry of Health), with some regional variability (Figure 1), it is still below the target of 95% set by the National Measles Elimination Plan (MEP) launched in 2003 [2], and outbreaks continue to occur.

scholarly journals Modelling the impact of COVID-19-related control programme interruptions on progress towards the WHO 2030 target for soil-transmitted helminths

2020 ◽  
Author(s):  
Veronica Malizia ◽  
Federica Giardina ◽  
Carolin Vegvari ◽  
Sumali Bajaj ◽  
Kevin McRae-McKee ◽  
...  
Keyword(s):  
Neglected Tropical Diseases ◽  
Control Programme ◽  
Mitigation Strategy ◽  
Mitigation Strategies ◽  
Preventive Chemotherapy ◽  
Soil Transmitted Helminths ◽  
Individual Based Models ◽  
Control Programmes ◽  
Catch Up ◽  
The Impact

Abstract Background On 1 April 2020, the WHO recommended an interruption of all activities for the control of neglected tropical diseases, including soil-transmitted helminths (STH), in response to the COVID-19 pandemic. This paper investigates the impact of this disruption on the progress towards the WHO 2030 target for STH. Methods We used two stochastic individual-based models to simulate the impact of missing one or more preventive chemotherapy (PC) rounds in different endemicity settings. We also investigated the extent to which this impact can be lessened by mitigation strategies, such as semiannual or community-wide PC. Results Both models show that without a mitigation strategy, control programmes will catch up by 2030, assuming that coverage is maintained. The catch-up time can be up to 4.5 y after the start of the interruption. Mitigation strategies may reduce this time by up to 2 y and increase the probability of achieving the 2030 target. Conclusions Although a PC interruption will only temporarily impact the progress towards the WHO 2030 target, programmes are encouraged to restart as soon as possible to minimise the impact on morbidity. The implementation of suitable mitigation strategies can turn the interruption into an opportunity to accelerate progress towards reaching the target.

scholarly journals The epidemiology of measles in Poland: prevalence of measles virus antibodies in the population

2000 ◽  
Vol 125 (2) ◽  
pp. 385-392 ◽  
Author(s):  
W. JANASZEK ◽  
W. GUT ◽  
N. J. GAY
Keyword(s):  
Measles Virus ◽  
Virus Antibody ◽  
Serum Samples ◽  
High Coverage ◽  
Measles Elimination ◽  
Specific Igg ◽  
Catch Up ◽  
Low Levels ◽  
Measles Virus Antibodies ◽  
The Impact

WHO has adopted a goal of eliminating indigenous measles from the European Region by the year 2007. The strategy focuses on reducing the proportion of susceptible individuals in the population to low levels and maintaining these low levels of susceptibility. Routine vaccination against measles for children aged 13–15 months was introduced in Poland in 1975, and a second dose added in 1991. High coverage (> 95%) is achieved with both doses. In order to assess progress towards measles elimination in Poland, a serological survey was performed to evaluate the impact of vaccination on the susceptibility profile of population. Three thousand residual serum samples from individuals aged 1–30 years were collected from hospitals in six selected voivodeships (administration units) in Poland. These were tested for measles-specific IgG using a commercial ELISA. Overall 4% (120/3000) were negative for measles virus antibody. The highest proportion of negatives (8·2%) occurred among cohorts born 1977–81 – the only cohorts in which susceptibility exceeded the WHO targets. ‘Catch-up’ vaccination strategies should target these cohorts.

scholarly journals Measles elimination in Italy: projected impact of the National Elimination Plan

2004 ◽  
Vol 133 (1) ◽  
pp. 87-97 ◽  
Author(s):  
P. MANFREDI ◽  
J. R. WILLIAMS ◽  
M. L. CIOFI DEGLI ATTI ◽  
S. SALMASO
Keyword(s):  
Mathematical Model ◽  
Vaccination Coverage ◽  
Measles Vaccine ◽  
Demographic Situation ◽  
Force Of Infection ◽  
Measles Elimination ◽  
Catch Up ◽  
The Impact ◽  
Below Replacement Fertility

A mathematical model was used to evaluate the impact of the Italian Measles National Elimination Plan (NEP), and possible sources of failure in achieving its targets. The model considered two different estimates of force of infection, and the possible effect on measles transmission of the current Italian demographic situation, characterized by a below-replacement fertility. Results suggest that reaching all NEP targets will allow measles elimination to be achieved. In addition, the model suggests that achieving elimination by reaching a 95% first-dose coverage appears unlikely; and that conducting catch-up activities, reaching high vaccination coverage, could interrupt virus circulation, but could not prevent the infection re-emerging before 2020. Also, the introduction of the second dose of measles vaccine seems necessary for achieving and maintaining elimination. Furthermore, current Italian demography appears to be favourable for reaching elimination.

Successful Control of Streptococcus pneumoniae 19A Replacement With a Catch-up Primary Vaccination Program in Taiwan

2019 ◽  
Vol 69 (9) ◽  
pp. 1581-1587 ◽  
Author(s):  
Chun-Yi Lu ◽  
Chuen-Sheue Chiang ◽  
Cheng-Hsun Chiu ◽  
En-Tzu Wang ◽  
Ying-Yan Chen ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Incidence Rate ◽  
Primary Vaccination ◽  
Vaccination Schedule ◽  
Incidence Rates ◽  
Vaccination Programs ◽  
Catch Up ◽  
Rate Ratios ◽  
National Programs ◽  
The Impact

Abstract Background Streptococcus pneumoniae infections in Taiwan mostly occur in children aged 2–4 years. Because of a significant increase in the incidence of serotype 19A-related infections, the 13-valent pneumococcal conjugate vaccine (PCV13) was initially introduced in the national immunization program for children 2–5 years of age, prior to the national programs for infants. We have assessed the impact of such vaccination programs in reducing the incidence of invasive pneumococcal disease (IPD) in Taiwanese children. Methods We analyzed the national data on IPDs from the Taiwan Centers for Disease Control between 2008 and 2017. We calculated the incidence rates of IPD and incidence rate ratios (IRRs) between years for different serotypes to estimate the effectiveness of the vaccination programs. Results The national catch-up primary vaccination schedule successfully reduced the incidence rate of IPD from 17.8/100 000 in 2012 to 5.5/100 000 in 2017 among children aged 0–5 years. The IRR (2017 over 2012) was 0.31, corresponding to a 69% reduction. A modest herd effect was also observed, with a 37% reduction in the incidence of IPD in elderly people (≥70 years) from 2012 to 2017. The incidence of IPD caused by serotype 19A in children aged 0–5 years was reduced by 32.6–44.3% yearly from 2012 to 2017. In 2015, serogroup 15 outnumbered 19A, to become the leading serotypes in children 0–5 years old. Conclusions Special catch-up vaccination programs starting from children 2–5 years of age with PCV13 have been highly effective in reducing the incidence of IPD, especially as caused by serotype 19A, in Taiwanese children.

scholarly journals Modelling the impact of COVID-19-related control programme interruptions on progress towards the WHO 2030 target for soil-transmitted helminths

2020 ◽  
Author(s):  
Veronica Malizia ◽  
Federica Giardina ◽  
Carolin Vegvari ◽  
Sumali Bajaj ◽  
Kevin McRae-McKee ◽  
...  
Keyword(s):  
Control Programme ◽  
Mitigation Strategies ◽  
World Health ◽  
Preventive Chemotherapy ◽  
Soil Transmitted Helminths ◽  
Individual Based Models ◽  
Control Programmes ◽  
Catch Up ◽  
Health Organization ◽  
The Impact

AbstractBackgroundOn the 1st of April 2020, the World Health Organization (WHO) recommended an interruption of all neglected tropical disease control programmes, including soil-transmitted helminths (STH), in response to the COVID-19 pandemic. This paper investigates the impact of this disruption on the achieved progress towards the WHO 2030 target for STH.MethodsWe used two stochastic individual-based models to simulate the impact of missing one or more preventive chemotherapy (PC) rounds in different endemicity settings. We also investigate the extent to which the impact can be lessened by mitigation strategies, such as semi-annual or community-wide PC.ResultsBoth models show that even without a mitigation strategy, control programmes will catch up by 2030. The catch-up time is limited to a maximum of 4.5 years after the interruption. Mitigations strategies may reduce this catch-up time by up to two years and can even increase the probability of achieving the 2030 target.ConclusionsThough a PC interruption will only temporarily impact the progress towards the WHO 2030 target, programmes are encouraged to restart as soon as possible to minimise the impact on morbidity. The implementation of suitable mitigation strategies can turn the interruption into an opportunity to accelerate the progress toward reaching the target.

scholarly journals Onchocerciasis control in Ghana (1974–2016)

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Nana-Kwadwo Biritwum ◽  
Dziedzom K. de Souza ◽  
Odame Asiedu ◽  
Benjamin Marfo ◽  
Uche Veronica Amazigo ◽  
...  
Keyword(s):  
Confidence Interval ◽  
Vector Control ◽  
Control Strategy ◽  
Financial Support ◽  
Control Programme ◽  
Ivermectin Treatment ◽  
Mobile Community ◽  
The Mean ◽  
The Impact ◽  
Onchocerciasis Control

Abstract Background The control of onchocerciasis in Ghana started in 1974 under the auspices of the Onchocerciasis Control Programme (OCP). Between 1974 and 2002, a combination of approaches including vector control, mobile community ivermectin treatment, and community-directed treatment with ivermectin (CDTI) were employed. From 1997, CDTI became the main control strategy employed by the Ghana OCP (GOCP). This review was undertaken to assess the impact of the control interventions on onchocerciasis in Ghana between 1974 and 2016, since which time the focus has changed from control to elimination. Methods In this paper, we review programme data from 1974 to 2016 to assess the impact of control activities on prevalence indicators of onchocerciasis. This review includes an evaluation of CDTI implementation, microfilaria (Mf) prevalence assessments and rapid epidemiological mapping of onchocerciasis results. Results This review indicates that the control of onchocerciasis in Ghana has been very successful, with a significant decrease in the prevalence of infection from 69.13% [95% confidence interval) CI 60.24–78.01] in 1975 to 0.72% (95% CI 0.19–1.26) in 2015. Similarly, the mean community Mf load decreased from 14.48 MF/skin snip in 1975 to 0.07 MF/skin snip (95% CI 0.00–0.19) in 2015. Between 1997 and 2016, the therapeutic coverage increased from 58.50 to 83.80%, with nearly 100 million ivermectin tablets distributed. Conclusions Despite the significant reduction in the prevalence of onchocerciasis in Ghana, there are still communities with MF prevalence above 1%. As the focus of the GOCP has changed from the control of onchocerciasis to its elimination, both guidance and financial support are required to ensure that the latter goal is met.

scholarly journals Impact of COVID-19 Home Confinement in Children’s Refractive Errors

2021 ◽  
Vol 18 (10) ◽  
pp. 5347
Author(s):  
Cristina Alvarez-Peregrina ◽  
Clara Martinez-Perez ◽  
Cesar Villa-Collar ◽  
Cristina Andreu-Vázquez ◽  
Alicia Ruiz-Pomeda ◽  
...  
Keyword(s):  
Public Health Problem ◽  
Cross Sectional Study ◽  
World Population ◽  
Sectional Study ◽  
Cross Sectional ◽  
School Aged Children ◽  
Digital Devices ◽  
Visual Screening ◽  
Near Work ◽  
The Impact

Background: Myopia is a public health problem, with estimations that 50% of the world population will be myopic by 2050. Some environmental factors, such as time spent outdoors, doing near work, and using digital devices, influence the development of myopia in children. Home confinement in Spain has increased these risk factors, so this study aims to investigate the impact of home confinement during the COVID-19 outbreak in the vision of school-aged children; Methods: A cross-sectional study in children between 5 and 7 years old that completed a visual screening and a questionnaire about their lifestyles at opticians in Spain in September and October of 2019 and 2020. Statistical analysis to compare lifestyles pre and post confinement, and vision in 2020 versus a similar cohort examined at the same opticians in 2019, was conducted; Results: Spanish children spent less time outdoors and more time doing near work in 2020 than in 2019 (p ≤ 0.001). There was a significant decrease of the spherical equivalent (mean ± standard deviation; 0.66 ± 2.03 D in 2019 vs. 0.48 ± 1.81 D in 2020; p ≤ 0.001); Conclusions: Lifestyles of Spanish children changed during the home confinement at the beginning of 2020. Together with changes in their lifestyles, spherical equivalents have decreased, which implies higher figures of myopia for children aged between 5 and 7.

Health Literacy of Parents and Carers in a Regional Community: A Cross-Sectional Study

2021 ◽  
pp. 0272684X2110225
Author(s):  
Matthew J. Leach ◽  
Sue Nichols ◽  
Sven Trenholm ◽  
Martin Jones
Keyword(s):  
Health Literacy ◽  
Primary School ◽  
Tertiary Education ◽  
Functional Health ◽  
Cross Sectional ◽  
Healthy Development ◽  
School Aged Children ◽  
Australian Community ◽  
Literacy Scores ◽  
The Impact

Background Supporting a child’s healthy development is determined, in part, by a parent’s ability to seek, access, interpret and effectively utilize health information. This aspect of parenting draws on a set of skills referred to as health literacy. Objective To assess the level of health literacy among parents/carers in a regional South Australian community. Methods Parents/carers of primary school-aged children, residing in Whyalla, South Australia, were invited to complete the 13-item All Aspects of Health Literacy Survey. Results 155 parents/carers completed the survey (79% mothers). Most participants were English-speaking (97%), employed (62%) and had 2–3 children (62%), with 52% completing tertiary education. Median total health literacy scores were mostly in the moderate-high range (median 27, IQR 26,27), as were critical health literacy scores (median 7, IQR 6,8). Higher scores were reported for functional health literacy (median 8, IQR 7,9), communicative health literacy (median 9, IQR 8,9) and empowerment health literacy (median 4, IQR 3,5). Conclusions Our findings reveal modest levels of health literacy among a sample of parents/carers of primary school-aged children in a regional South Australian community. Further work is needed to understand the differential effect of parental health literacy on child health outcomes, and the types of strategies that may mitigate the impact of these barriers on a child’s healthy development.

scholarly journals Measles Exposure Investigation in a Children’s Hospital Emergency Department— Denver Metropolitan Area, Colorado, 2019

2020 ◽  
Vol 41 (S1) ◽  
pp. s18-s19
Author(s):  
Ashley Richter
Keyword(s):  
Emergency Department ◽  
International Travel ◽  
Childhood Vaccination ◽  
Prevention Measures ◽  
Mmr Vaccine ◽  
Children's Hospital ◽  
Control Intervention ◽  
Children’S Hospital ◽  
Lost To Follow Up

Background: On December 14, 3 unvaccinated siblings with recent international travel presented to Children’s Hospital Colorado emergency department (CHCO-ED) with fever, rash, conjunctivitis, coryza, and cough. Measles was immediately suspected; respiratory masks were placed on the patients before they entered an airborne isolation room, and public health officials (PH) were promptly notified. Notably, on December 12, 1 ill sibling presented to CHCO-ED with fever only. We conducted an investigation to confirm measles, to determine susceptibility of potentially exposed ED contacts and healthcare workers (HCWs), and to implement infection prevention measures to prevent secondary cases. Methods: Measles was confirmed using polymerase chain reaction testing. Through medical record review and CHCO-ED unit-leader interviews, we identified patients and HCWs in overlapping ED areas with the first sibling, until 2 hours after discharge. Measles susceptibility was assessed through interviews with adults accompanying pediatric patients and HCW immunity record reviews. Potentially exposed persons were classified as immune (≥1 documented measles-mumps-rubella (MMR) vaccination or serologic evidence of immunity), unconfirmed immune (self-reported MMR or childhood vaccination without documentation), or susceptible (no MMR vaccine history or age <12 months). Susceptibility status directed disease control intervention, and contact follow-up was 21 days. Results: On December 14, all 3 siblings (ages 8–11 years) had laboratory-confirmed measles and were hospitalized. CHCO’s rapid isolation of the 3 cases within 5 minutes after presentation to the ED eliminated the need for exposure assessment on the day of hospitalization. However on December 12, the 1 ill sibling potentially exposed 258 ED contacts (90 patients, 168 accompanying adults) and 22 HCWs. The PH department identified 158 immune contacts (61%), 75 unconfirmed immune contacts (29%), and 19 susceptible contacts (8%); 6 contacts (2%) were lost to follow-up. Overall, 15 susceptible contacts received immune globulin (IG) postexposure prophylaxis and 4 contacts were placed on 21-day quarantine. Unconfirmed immune contacts self-monitored for measles symptoms and were contacted weekly by PH for 21 days. Moreover, 20 immune HCWs monitored symptoms daily; 2 susceptible HCWs were placed on 21-day quarantine. No secondary cases were identified. Conclusions: Rapid measles identification and isolation, high levels (90%) of immunity among contacts, prompt administration of IG, and effective collaboration between PH and CHCO prevented transmission.Funding: NoneDisclosures: None

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