COVID-19: How can the air quality in India be improved? | World Economic Forum – World Economic Forum

The conversation on air quality in India is often seasonal, resurfacing around the winter months of polluted air. But Covid-19 will likely make this focusespecially on indoor air qualityan everyday phenomenon.

If India hopes to reopen offices, cinema halls, malls, and schools fully and safely in the future, ventilation will be a key aspect of a social life that coexists with Covid-19. This is because closed, crowded spaces with close contactthe three Cshave been consistently shown to be associated with spread; a combination of the three being often associated with superspreader events, says Dr Lancelot Pinto, consultant pulmonologist at Mumbais Hinduja Hospital.

Most of these solutions are basic and involve cracking open a window and ensuring there is greater air exchange per hour. (Air exchange per hour is the number of times the entire volume of air in a room is completely replaced.)

But this may be a double-edged sword in India. In some cities with clean air and moderate climates, creating a draft for fresh air to circulate is possible and ideal. Fans can be added to help lower temperatures, improve ambient comfort, and help air circulate, Pinto says. But these need to be placed in ways that do not cause air to be blasted from one person to another (exhaust fans might help redirect air).

Pinto says. There would be challenges to manage this in the monsoons, and one would have to think of novel and tailored solutions to prevent discomfort due to humidity.

But cities in northern and central India, with high levels of particulate matter pollution, would have to consider the risk of Covid-19 versus the risk of oxidative stress from poor air quality, says Jai Dhar Gupta, founder of Nirvana Being, a protective solutions company. For eight months a year, our air quality is so bad that its not ideal to create ventilation with polluted air from outside, he says.

For this, an HVAC (heating, ventilation, and air conditioning) consultant can work with companies and institutions to install filtration devicessuch as HEPA filters that weed out small particles and even some pathogens, and ultraviolet machines to kill disease-causing virusesin existing air conditioning set-ups. But these tend to be expensive solutions. In the case of cinema halls and multiplexes, these devices would be the only way to ensure moviegoers can return without the fear of contracting the disease. Several cinema halls in large Indian cities like Delhi and Mumbai have already installed UV filters for indoor air.

Technology aside, ventilation, according to Pinto, continues to remain the most important and least expensive aspect of ideal indoor air quality.

The only way to ventilate, Gupta says, is to bring in outside air indoors. In rural or semi-urban healthcare centres, for instance, where resources and access to technology are limited, simply ensuring that a draft is created for air to pass through will mitigate the risk of Covid-19.

But in citiesespecially in schools that are now air-conditionedit is dangerous to have split air conditioners when there are over 30 people in one closed room. Schools are a hotbed for germs and contaminants and that is how our kids develop immunity, Gupta says. But this priority should be different in a post-Covid environment.

Gupta suggests that public places must follow the simple rule of dont share the air.

Split air conditioners are the worst innovation of our generation because unlike window ACs, these only cool and circulate indoor air, Gupta says.

And opening a window or turning on an exhaust fan may not be the most energy-efficient solution, but one that may be necessary. The other alternative is to add nano-filter sheets to existing air conditioners that filter out viruses and bacteria from indoor air to a great degree. Urban Indian homes, offices, and public places are now also familiar with the concept of an air purifier, which can be used around the year instead of only during peak pollution months.

Gupta suggests a four-point baseline protocol that should help improve indoor air quality:

1. While viruses cannot be monitored through a device, a simple CO2 filter will be able to detect if there is ample ventilation or the air indoors is stale.

2. With CO2, a PM2.5 monitor can detect how polluted the air is. This is doubly important in the context of Covid because viruses are likely to attach themselves to particulate matters and remain airborne.

3. Viruses thrive in cool conditions. Gupta says indoor spaces should maintain a temperature of 25C or above, even if it means sacrificing a little ambient comfort. This will also, in turn, make buildings more energy-efficient.

4. Viruses thrive in dry environments. Ideally, humidity levels of 50-60% should be maintained indoors.

But to truly make indoor spaces safe from Covid-19, many buildings need a complete overhaul.

It is sad that I havent seen too many buildings in India designed for human wellbeing, Gupta says. All this ventilation is basic stuff. Why wasnt this already followed over the last 30-40 years?-What is the role of an HVAC consultant if all of these mechanisms are not already in place?

He recommends that strict protocols will need to be put in place and the government would need to incentivise institutions to include ventilation in their blueprints. It is mind-boggling to see that we think we can get back to work safelyafter decades of cutting corners, Gupta says. Till these spaces can be made safer, masking up indoors is here to stay, coupled with keeping indoors sparsely occupied.

As a policy focus, countries have experimented with encouraging outdoor Covid-safe behaviour, such as restaurants on sidewalks. A significant proportion of indoor overcrowding occurs in religious places, gatherings in halls for events such as weddings and family functions, and in crowded workspaces, says Hinduja Hospitals Pinto. We need to try and actively encourage these interactions to move outdoors, or online, whenever feasible, with measures to shield individuals from the vagaries of the weather.

One year on: we look back at how the Forums networks have navigated the global response to COVID-19.

Using a multistakeholder approach, the Forum and its partners through its COVID Action Platform have provided countless solutions to navigate the COVID-19 pandemic worldwide, protecting lives and livelihoods.

Throughout 2020, along with launching its COVID Action Platform, the Forum and its Partners launched more than 40 initiatives in response to the pandemic.

The work continues. As one example, the COVID Response Alliance for Social Entrepreneurs is supporting 90,000 social entrepreneurs, with an impact on 1.4 billion people, working to serve the needs of excluded, marginalized and vulnerable groups in more than 190 countries.

Read more about the COVID-19 Tools Accelerator, our support of GAVI, the Vaccine Alliance, the Coalition for Epidemics Preparedness and Innovations (CEPI), and the COVAX initiative and innovative approaches to solve the pandemic, like our Common Trust Network aiming to help roll out a digital passport in our Impact Story.

From a public health perspective, Pinto says this will also bode well for India, which has close to a third of the worlds burden of tuberculosis, also a disease that spreads through ill-ventilated spaces. Even pre-Covid, we should have been cognizant of the need for better ventilation indoors, and an active move to open, well-ventilated spaces, he adds.

Go here to read the rest:

COVID-19: How can the air quality in India be improved? | World Economic Forum - World Economic Forum