The August 2020 COVID-19 outbreak in Aotearoa, New Zealand: Delayed contact tracing for Pacific people contributes to widening health disparities

Assessing the impact of the COVID-19 pandemic on childhood vaccine uptake with administrative data

This study examines the impact of the COVID-19 pandemic on childhood vaccination coverage in New Zealand using population-wide administrative data. For each immunisation event from ages 6 weeks to 4 years, we compare vaccine uptake of children who became eligible for immunisation during the pandemic to earlier-born cohorts whose immunisations were due before the pandemic. We find that the initial phase of the pandemic had, on average, small or nil effects on timely immunisation at the four infancy events, but a large effect at the 4-year event of -15 percentage points. Nine months after eligibility, catch-up among the pandemic-affected cohorts was largely achieved for the infancy immunisations, but 4-year coverage remained 6 percentage points below pre-pandemic levels. Vaccine uptake at 4 years initially dropped most among children of European ethnicity and of non-beneficiary parents but catch-up quickly surpassed their Māori, Pacific, and beneficiary counterparts for whom sizeable gaps in coverage below pre-pandemic levels remained at the end of our observation period. The pandemic thus widened pre-existing inequalities in immunisation coverage.

An evaluation of the COVID-19 self-service digital contact tracing system in New Zealand

BACKGROUND

Digital contact tracing (DCT) aims to improve time-to-isolation (timeliness) and find more potentially exposed individuals (sensitivity) to enhance the utility of contact tracing. The aim of this study was to evaluate the public uptake of a DCT self-service survey and its integration with the Bluetooth exposure notification system within the New Zealand Covid Tracer App (NZCTA).

METHODS

We adopted a retrospective cohort study design using community COVID-19 cases from February 2022 to August 2022 in New Zealand (1.2 million cases). We examined the proportion of cases completing a self-service survey and the time to complete the survey by age, sex and ethnicity.

RESULTS

Overall, 66 % of cases completed their self-service survey. Completion was influenced by age, sex and ethnicity. The median completion time was 1.8 h (IQR 0.2, 17.2), with 95 % of those completing this survey doing so within 48 h of case identification. Around 13 % of all survey completers also uploaded their Bluetooth data, which resulted in an average of 663 cases per day notifying 4.5 contacts per case.

CONCLUSION

The combination of high public uptake and rapid response times suggest self-service DCT could be a useful tool for future outbreaks, particularly if implemented in conjunction with manual processes and other DCT tools (e.g. Bluetooth) to address issues related to performance (sensitivity, timeliness), effectiveness, and health equity.

Population and contact tracer uptake of New Zealand's QR-code-based digital contact tracing app for COVID-19

This study aimed to understand the population and contact tracer uptake of the quick response (QR)-code-based function of the New Zealand COVID Tracer App (NZCTA) used for digital contact tracing (DCT). We used a retrospective cohort of all COVID-19 cases between August 2020 and February 2022. Cases of Asian and other ethnicities were 2.6 times (adjusted relative risk (aRR) 2.58, 99 per cent confidence interval (95% CI) 2.18, 3.05) and 1.8 times (aRR 1.81, 95% CI 1.58, 2.06) more likely than Māori cases to generate a token during the Delta period, and this persisted during the Omicron period. Contact tracing organization also influenced location token generation with cases handled by National Case Investigation Service (NCIS) staff being 2.03 (95% CI 1.79, 2.30) times more likely to generate a token than cases managed by clinical staff at local Public Health Units (PHUs). Public uptake and participation in the location-based system independent of contact tracer uptake were estimated at 45%. The positive predictive value (PPV) of the QR code system was estimated to be close to nil for detecting close contacts but close to 100% for detecting casual contacts. Our paper shows that the QR-code-based function of the NZCTA likely made a negligible impact on the COVID-19 response in New Zealand (NZ) in relation to isolating potential close contacts of cases but likely was effective at identifying and notifying casual contacts.

Global Perspective on the Impact of the COVID-19 Pandemic on Rheumatology and Health Equity

Although the public health emergency associated with the COVID-19 pandemic has ended, challenges remain, especially for individuals with rheumatic diseases. We aimed to assess the historical and ongoing effects of COVID-19 on individuals with rheumatic diseases and rheumatology practices globally, with specific attention to vulnerable communities and lessons learned. We reviewed literature from several countries and regions, including Africa, Australia and New Zealand, China, Europe, Latin America, and the US. In this review, we summarize literature that not only examines the impact of the pandemic on individuals with rheumatic diseases, but also research that reports the lasting changes to rheumatology patient care and practice, and health service use. Across countries, challenges faced by individuals with rheumatic diseases during the pandemic included disruptions in health care and medication supply shortages. These challenges were associated with worse disease and mental health outcomes in some studies, particularly among those who had social vulnerabilities defined by socioeconomic, race, or rurality. Moreover, rheumatology practice was impacted in all regions, with the uptake of telemedicine and changes in health care utilization. While many regions developed rapid guidelines to disseminate scientific information, misinformation and disinformation remained widespread. Finally, vaccine uptake among individuals with rheumatic diseases has been uneven across the world. As the acute phase of the pandemic wanes, ongoing efforts are needed to improve health care access, stabilize rheumatology drug supplies, improve public health communication, and implement evidence-based vaccination practices to reduce COVID-19 morbidity and mortality among individuals with rheumatic diseases.

Priority Health Needs and Challenges in New Zealand Pacific Communities-A Qualitative Analysis of Healthcare Delivery during the COVID-19 Pandemic

BACKGROUND

The Pacific community in New Zealand experienced an increased risk of COVID-19 transmission due to delayed contact tracing, along with a disproportionate prevalence of health challenges. The community is representative of a diverse population who proudly identify with the vibrant Pacific Island nations of Samoa, Tonga, Cook Islands, Niue, Fiji, etc. Pacific communities in New Zealand face a higher burden of health challenges compared to other groups. These challenges include obesity, high blood pressure, diabetes, mental health disorders, respiratory issues, smoking, excessive alcohol consumption, disabilities, and chronic conditions. Concerns were raised regarding the oversight of Pacific community views in the initial pandemic response planning. Pacific healthcare professionals expressed concerns about inadequate state support and the need for active involvement in decision making.

METHODS

This article reports thematic analyses of text data gained from open-ended questions from a purposive anonymous online survey completed by Pacific healthcare professionals in New Zealand.

RESULTS

The participants shared their experiences and opinions, which generated four major themes highlighting priority health needs and challenges. These themes included the necessity for a culturally appropriate healthcare plan, adequate resourcing, addressing discrimination, and emphasising a united and collaborative effort for consistency. The research's limitation is the narrow scope of open-ended questions in the questionnaire survey. However, conducting semi-structured face-to-face interviews can provide more in-depth data and offer further insights beyond the four broad themes identified in the analysis.

CONCLUSIONS

The findings can inform the development of future research to provide more in-depth data and offer further insights beyond the four broad themes identified in the analysis. This will help develop future tailored healthcare delivery plans that address specific Pacific community needs.