COVID-19: 46% vaccine redistribution best for high- and low-income countries alike

 
Increasing the new coronavirus infection (COVID-19) vaccine, which is provided free of charge from high-income countries to low- and middle-income countries, to 46% of the total supply of high-income countries will significantly increase mortality in low- and middle-income countries. Modeling studies have shown that it can lead to a decline and may be protected from new mutant strains and pandemic waves on a global scale.The paper reporting this finding isNature Human Behavior Will be published in.The findings are that equitable distribution of vaccines worldwide is essential to curb the pandemic wave caused by new strains, effectively by providing vaccines to low- and middle-income countries quickly and more generously at no cost. Emphasizes that it is achievable.

The worldwide distribution of the COVID-19 vaccine is disproportionate, with much more distributed to high-income countries than to low- and middle-income countries.While this unfair situation continues to lead to high infection and mortality rates in low- and middle-income countries, a new variant of the recent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The emergence of stocks threatens disease control and economic recovery efforts by high-income countries.

Now, Qingpeng Zhang, Daniel Zeng and colleagues use a mathematical model to conclude the unfair distribution of vaccines over the next five years against the backdrop of the evolution of SARS-CoV-2 strains and rising global mortality. I predicted.Unfair vaccination leads to a faster decline in mortality in the first year in high-income countries, but it prolongs the duration of the global pandemic.High-income countries are vulnerable to increased infections from the first year onwards, as new stocks are more likely to emerge in low- and middle-income countries, increasing global risk.Conversely, a fair vaccine distribution strategy can significantly curb the spread of new stocks and bring significant benefits to both high-income and low- and middle-income countries.Increasing free vaccine supply to 5% of total vaccine supply in high-income countries is expected to lead to a significant reduction in mortality in low- and middle-income countries, with all countries experiencing a wave of new stocks and pandemics. May be protected from.

The authors strongly indicate that the findings are not only worth investigating the long-term effects of vaccines on the emergence of new strains of SARS-CoV-2, but also the need to improve global vaccine distribution strategies. I conclude that.In a related News & Views, Dan Yamin said, "Supporting COVID-19 vaccination in low- and middle-income countries is a substantially sound moral responsibility for high-income countries and in the interests of high-income countries themselves. It can also be. "

 
* This article is reprinted from "Nature Japan Featured Highlights".
Reprinted from: "COVID-19: Redistributing 46% vaccine is beneficial to both high-income and low-income countries'