It should not come as a surprise to anyone that COVID-19 has interrupted the fight against other major diseases. The pandemic has thoroughly and completely disrupted so much over the last two and a half years, that of course it has directly impacted efforts to combat other preventable diseases. However, we cannot afford to tackle one disease at a time. While we must continue to fight COVID-19, we cannot afford to neglect other diseases, such as AIDS, TB, malaria and polio. To tackle all these crises at the same time, we need to increase funding to global health in its entirety, rather than just focusing on COVID-19. In the most recent federal budget, the government again made a small increase to Canada’s investments in development. We can celebrate that as a step in the right direction, especially since they specifically identified global health as an area for expanded investment. However, the context is key: Canada still invests only 32 cents out of every $100 of gross national income. This is well below the average of 39 cents from our “rich country” peers and even further below the 70 cents some of our G7 peers invest. Now is the time for Canada to rise above that average: especially as we are facing a convergence of crises across multiple diseases. While the COVID-19 pandemic raged on, existing diseases that were already plaguing global health systems have worsened or reappeared. A new case of wild polio has been found in Malawi, 30 years after the last reported case in Africa. 2020 was the first year in a while that saw an increase in deaths from malaria and tuberculosis (TB). HIV testing also fell by 22 per cent. Since people living with HIV and without access to treatment are severely immunocompromised, COVID-19 hits them hard. We’re also seeing reports of increased COVID-19 mutations when the virus interacts with HIV. To put the fight against these three deadly diseases back on track, Canada will need to re-invest in the Global Fund to Fight AIDS, TB, and Malaria. The Global Fund is one of the most effective global health organizations in the world and helped save 44 million lives since its creation in 2002. The economic argument is also clear and strong: for every $1 invested in the Global Fund, countries see $31 in health and economic returns. The rapid development of vaccines, tests, and treatments during the pandemic has led to further innovations in science and research that can transform global health. By looking ahead and investing in the future, we can harness new technology, such as mRNA vaccines, that could finally beat these diseases after decades and centuries of fighting them. This progress will only be possible with immediate and significant investments in global health. President Biden already set the tone by asking the U.S. Congress to increase the American investment by 30 per cent, and Canada should follow suit. With this new investment, Canada will help reduce the incidence rate of these diseases by up to 58 per cent. That means 20 million more lives could be saved between 2024 and 2026! Investing in better global health to beat COVID-19 and diseases like HIV and TB is not just about charity, it is about making the world a safer and more prosperous place. As COVID-19 has shown, until a disease is brought under control everywhere, new variants and outbreaks will remain a threat to everyone everywhere. For COVID-19, we can end the pandemic by getting tests, treatments, and vaccines to those who need them and continue to invest in new and better tools against future variants and pandemics. The rapid development we’ve seen on this front to date shows that when scientists are properly funded and backed by governments and regulators, we can tackle the world’s most threatening diseases. For other preventable diseases, we can get back on track, but only if we increase investments to tackle more than one disease at a time. By continuing to fund innovation and technology we can develop vaccines against other major diseases, from flu to malaria and HIV, saving millions of lives around the world and unlocking even more economic growth world-wide. Justin McAuley is the media manager at ONE Canada and a former staff to the minister of development. Elise Legault is the policy and advocacy manager at ONE Canada and a former policy advisor at UNESCO.