After three long years, the pandemic shows no signs of slowing down. Unfortunately, public resistance and fatigue towards Covid-19 interventions and restrictions are at an all-time high. Even China, once considered a leader in virus control, has been quick to dispense with most mitigation strategies.
But make no mistake, Covid-19 still represents a clear and present danger. Research shows that two or more reinfections of Covid-19 double the risk of death, blood clots, and lung damage, among other negative health outcomes.
The risk of cardiovascular events has been found to increase by 4.5% up to 12 months after infection, regardless of age, race, gender, obesity, smoking, or other factors. Furthermore, the latest waves of infection are being fueled by new variants that evade immunity from both vaccination and previous infections.
The good news is that we still have powerful prevention tools at our disposal. In fact, there is a widely underused strategy that requires no behavior change or restrictions, can be used almost anywhere, and would also help protect against other airborne viruses, such as respiratory syncytial virus (RSV) and influenza.
It requires much more investment in basic measures like ventilation, air filtration, and ultraviolet germicidal light, and accelerating exploration of newer discoveries, such as the potential use of aerosol acidity levels to inactivate certain airborne viruses.
Vaccines are very effective at reducing the risk of death and serious illness, but are generally not as effective at preventing transmission. The wearing of masks has become so politicized and stigmatized in many Western countries that even some healthcare workers refuse to wear them.
However, virus-carrying aerosols can remain airborne for hours after being exhaled, making it difficult to judge what counts as a high-risk situation. Taking all of these factors into account, the best way to reduce the risk of transmission is to decrease the concentration of airborne viruses that are available to be inhaled in the first place.
We need to challenge the prevailing attitude that treats the spread of airborne pathogens indoors as an inevitable part of daily life. Unlike our ancestors, we spend almost 90% of our time indoors. For decades, governments around the world have invested heavily in food security, sanitation, and clean water, all in the name of protecting public health.
In developed countries, foodborne and waterborne illnesses have been largely eliminated through a combination of research, legislation, the development of authoritative public health agencies, and infrastructure funding. Why shouldn’t we give equal priority to achieving clean, pathogen-free air in public and private spaces?
Taking the fight against pathogens before they can infect us will require a multi-pronged strategy. Professional engineering bodies must develop comprehensive ventilation standards, and new measures will be needed to ensure that these standards are met.
That means setting up regulatory bodies to oversee monitoring and enforcement, not just for new construction but also for retrofits of existing buildings. To that end, governments should help provide specialized training for building owners and operators. The goal for all buildings should be to recirculate the air supply of the occupied spaces at a rate of at least six air changes per hour.
This may sound like a huge task. But the improvements can be implemented gradually and strategically in different sectors. The immediate priority is to ensure pathogen-free air in hospitals and healthcare settings, to protect vulnerable patients, and on airplanes, to stop the rapid spread of new variants around the world.
After that, our focus must shift to public transportation, including trains and buses, and then to offices, schools, and day care centers. In addition to preventing viral transmission, better ventilated areas have been shown to improve children’s cognitive performance and reduce illness-related absenteeism. Finally, we must address ventilation in individual homes and residential buildings.
Critics of such proposals will cite the initial cost as a barrier. However, it is known that even an average flu season costs the United States $11.2 billion, due to absenteeism and resulting reductions in productivity. According to an August 2022 Brookings Institution report, prolonged covid may be “keeping up to four million people out of work” in the US, at an annual cost of $170 billion to $230 billion a year in wages. lost.
Having a workforce that repeatedly gets sick means that we are accepting continuous interruptions in all industries. But this is unsustainable. Parents are already exhausted and overwhelmed by the “triple epidemic” (influenza, RSV and Covid-19) that has been sweeping schools and day care centers.
Beyond the direct financial costs, the trauma and upheaval inflicted by the pandemic make it clear that investing in indoor pathogen-free air is not only the most economical but also the most ethical option. Like other effective investments in public health, this one would soon pay for itself. —© Union Project
