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Source: COVID-19 Pandemic  Jul 14, 2020  3 years ago
COVID-19 Pandemic Is Expected To Last For 5 Years Or More, Modelling Study By Imperial College Predicts Surge In HIV, TB, And Malaria Deaths
COVID-19 Pandemic Is Expected To Last For 5 Years Or More, Modelling Study By Imperial College Predicts Surge In HIV, TB, And Malaria Deaths
Source: COVID-19 Pandemic  Jul 14, 2020  3 years ago
COVID-19 Pandemic:  A modeling study by Imperial College London and Oxford University predicts that the global healthcare industry will be disrupted the next 5 years due to the COVID-19 pandemic and that there will be a huge surge in deaths for those who contract or are suffering from HIV, TB and Malaria.

Certain low- and middle-income countries (LMICs) could see HIV, tuberculosis (TB), and malaria deaths increase by as much as 10%, 20%, and 36% respectively over the next 5 years due to the disruption of health services caused by the COVID-19 pandemic and its response, according new modelling research published in The Lancet Global Health journal. https://www.thelancet.com/pdfs/journals/langlo/PIIS2214-109X(20)30288-6.pdf
By modelling the public health impact of COVID-19 on HIV, TB, and malaria in LMICs over the next 5 years, researchers estimate that in areas heavily affected by these major infectious diseases, the impact of COVID-19 disruption on years of life lost (the number of years a person would have been expected to live had they not died of a particular cause) could, in the worst case, be of a similar scale to the direct impact of the pandemic itself.
It is expected that the COVID-19 pandemic has the potential to cause substantial disruptions by overwhelming already fragile health systems, or through response measures limiting routine programme activities and care-seeking, and interrupting medical supply chains. But maintaining core services for HIV, TB, and malaria specifically access to antiretroviral therapy (ART), timely TB diagnosis and treatment, and early resumption of the distribution of long-lasting insecticide-treated nets (LLINs) and antimalarial treatment—could largely mitigate the broader health impact of the COVID-19 pandemic, researchers say.
The authors however caution that predicting the true impact of the ongoing COVID-19 pandemic and its response on other diseases is fraught with difficulty, especially when so much remains unknown about the virus and the extent to which other disease programmes may be disrupted, and how this might impact population health. They flag that their study aims to quantify the potential scale of the impact of COVID-19, and to guide how it could be minimized, rather than provide precise estimates.
Though malaria deaths worldwide have reduced by half since 2000, but progress has stalled as mosquitoes and parasites gain resistance to treatment. Around 94% of deaths occur in sub-Saharan Africa where malaria claimed an estimated 380,000 lives in 2018. Similarly, global HIV/AIDS deaths have halved in a decade driven by the availability of ART. In 2019, around 690,000 people died from the disease worldwide, the vast majority in LMICs. An estimated 49 million lives were saved through TB diagnosis and treatment between 2000 and 2015, but the disease still claimed the lives of 1.8 million people in 2018—with over 95% of these deaths occurring in LMICs.
Professor Dr Timothy Hallett from Imperial College London, UK, who co-led the research told Thailand Medical News, "The COVID-19 pandemic and actions taken in response to it could undo the some of the advances made against major diseases such as HIV, TB, and mala ria over the past two decades, compounding the burden caused by the pandemic directly. In countries with a high malaria burden and large HIV and TB epidemics, even short-term disruptions could have devastating consequences for the millions of people who depend on programmes to control and treat these diseases. However, the knock-on impact of the pandemic could be largely avoided by maintaining core services and continuing preventative measures."
Dr Halett, "Our findings underscore the extraordinarily difficult decisions facing policy makers. Well managed, long-term suppression measures could avert the most COVID-19 deaths. But if these interventions are not well managed, they could cause people to stay away from hospitals and clinics and force public health programmes to be cancelled, leading to a large spike in deaths from other major infectious diseases that had been coming under control."
Dr Peter Sands, Executive Director of The Global Fund to Fight AIDS, Tuberculosis and Malaria, Geneva, Switzerland (who was not involved in the study) said, "The knock-on impact on HIV, tuberculosis, and malaria could potentially be even worse than this study suggests, and in some countries, it could be even worse than the direct impact of COVID-19. The Global Fund conducts a biweekly qualitative survey across the more than 100 countries in which it invests; the latest published results suggest that 85% of HIV, 78% of tuberculosis, and 73% of malaria programmes are being disrupted. 18% of HIV programmes, 17% of tuberculosis programmes, and 19% of malaria programmes are experiencing high or very high disruption."
Dr Sands added, "In countries heavily affected by HIV, tuberculosis, and malaria, COVID-19 could result in many years of hard-won gains being reversed. We cannot let this happen. We need more resources and decisive action, and we must measure success not just in terms of minimizing the direct impact of COVID-19, but in terms of minimizing its total impact, including the knock-on impact on HIV, tuberculosis, and malaria."
The researchers for the study assumed a basic reproductive number (R0; the average number of people each individual with the virus is likely to infect) of 3 to develop four different policy response scenarios to the COVID-19 pandemic no action, mitigation (which represents a 45% reduction in R0 for 6 months using interventions such as physical distancing), suppression-lift (a 75% reduction in R0 for 2 months), or suppression a 75% reduction in R0 for 1 year; see table 1). Then they used transmission models of HIV, TB, and malaria to estimate the additional impact on health that could be caused in different settings, either by COVID-19 interventions limiting routine programme activities, or due to COVID-19 cases overburdening the health system.
On the whole, the research findings suggest that the impact of the pandemic varies according to the extent to which interventions against COVID-19 cause long disruptions to activities, and how successfully those measures reduce transmission of SARS-CoV-2, and avoid the health system being overwhelmed.
The biggest impact on HIV is projected to be from interruption to the supply and administering of ART, which may occur during times of high health system demand. In the worst case scenario, assuming no action or suppression-lift, countries with high rates of HIV typical in parts of southern Africa (20% prevalence among 15-49 year olds in 2018), could see up to 10% more deaths due to HIV over the next 5 years than would occur without COVID disruptions equivalent to 612 additional HIV deaths per million population in 2020-2024. The researchers suggest that offering individuals receiving ART multi-month prescriptions or home delivery could ensure they can access treatment even in periods of highest health system demand.
In the case of TB, the greatest impact is predicted to be from reductions in timely diagnosis and treatment of new cases, which could result from long periods of COVID-19 containment measures limiting access to services. In the worst case scenario, assuming suppression in countries with a very high burden typical in southern Africa (520 new cases per 100,000 population in 2018), TB deaths could rise by as much as 20% over the next 5 years (equivalent to 987 additional TB deaths per million population in 2020-2024) compared with when services are functioning normally.
The Imperial College and Oxford model predicts that the greatest impact on malaria burden could result from interruption of planned net campaigns, which usually take place every 3 years. In the worst case, with COVID-19 disruptions coinciding with the malaria transmission season and planned LLIN distribution, malaria deaths could increase by 36% over the next 5 years equivalent to 474 additional malaria deaths per million populations in 2020-2024.
Co-lead author Dr Alexandra Hogan from Imperial College London, UK said, "Many of the gains made in malaria control over the past decade have been due to distribution of long-lasting insecticide-treated nets in sub-Saharan Africa where the vast majority of malaria deaths occur. However, the COVID-19 pandemic will likely disrupt these distributions in 2020, resulting in more malaria deaths. Routine preventative measures must be prioritized, ensuring mosquito net distribution campaigns and prophylactic treatments, such as mass drug distribution and seasonal malaria chemoprevention, are maintained."
However there is still an opportunity to substantially reduce the death toll by prioritizing the most critical services, specifically antiretroviral therapy for HIV, timely TB diagnosis and treatment, and provision of long-lasting insecticide-treated nets for malaria, researchers say.
For more on the developing COVID-19 Pandemic which is expected to get worse, keep on logging to Thailand Medical News.


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