An estimated two million people in the UK, which represents around three percent of the population, have reported experiencing so-called long Covid, official statistics showed Wednesday.
Around 1.4 million of them said they first had Covid-19, or suspected they had the virus, at least 12 weeks previously, according to the Office for National Statistics (ONS).
It also found 826,000 of them first had coronavirus at least a year earlier, while 376,000 said they first had it at least two years previously.
The ONS figures are based on people's own reports of suffering from long Covid from a representative sample of private households in the four weeks to May 1.
Fatigue is the most common symptom -- experienced by 55 percent of those with self-reported long Covid -- followed by shortness of breath (32 percent), a cough (23 percent) and muscle ache (23 percent).
The biggest proportion were people aged 35 to 69, females, those living in more deprived areas and those working in certain professions such as social care, teaching and education or health care, the ONS said.
Those with another activity-limiting health condition or disability were also more prevalent among the long Covid sufferers, it added.
The UK, which was one of the worst-impacted countries by the pandemic, has eased all restrictions this year as cases and hospital admissions have fallen amid relatively high vaccination rates.
The country of around 67 million people has recorded nearly 18.8 million cases, and almost 178,000 deaths from the virus, since it hit more than two years ago.
The ONS assessment found nearly a third of the two million people reporting long-lasting symptoms first had Covid, or suspected they had it, during the Omicron wave which began late last year.
Its numbers follow another UK study published in April showing that only around a quarter of people have completely recovered from Covid a full year after being hospitalised with the disease.
The research, by the National Institute for Health and Care Research involving more than 2,300 people, also found that women were 33 percent less likely to fully recover than men.
Courtesy: Reuters
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Anurag Bajpayee's Gradiant: The water company tackling a global crisis
In a world increasingly defined by scarcity, one resource is emerging as the most quietly decisive factor in the future of industry, sustainability, and even geopolitics: water. Yet, while the headlines are dominated by energy transition and climate pledges, few companies working behind the scenes on water issues have attracted much public attention. One of them is Gradiant, a Boston-based firm that has, over the past decade, grown into a key player in the underappreciated but critical sector of industrial water treatment.
A Company Born from MIT, and from Urgency
Founded in 2013 by Anurag Bajpayee and Prakash Govindan, two researchers with strong ties to the Massachusetts Institute of Technology (MIT), Gradiant began as a scrappy start-up with a deceptively simple premise: make water work harder. At a time when discussions about climate change were centred almost exclusively on carbon emissions and renewable energy, the trio saw water scarcity looming in the background.
Their insight was that some of the world’s largest industries—semiconductors, pharmaceuticals, chemicals, food and beverage—were facing acute water-related challenges long before the general public grasped the issue. “Without water, these industries don’t just slow down; they stop,” Bajpayee has often remarked. What Gradiant offered was not just a way to save water, but a way to rethink how it is used, recycled, and valued.
The Engineers Behind the Mission
Anurag Bajpayee, the company’s CEO, whose academic path took him to MIT, where he completed a PhD in Mechanical Engineering focused on water treatment technologies. It was there that he met Govindan, a fellow engineer and now Gradiant's co-founder and COO, whose expertise complemented his in fluid mechanics and process engineering.
Unlike many founders who drift towards the language of venture capital and corporate strategy, Anurag Bajpayee and his team remained grounded in the technical problem: how to make industrial water treatment more efficient, more affordable, and more sustainable. The company still bears the imprint of its founders’ engineering roots. Gradiant is less Silicon Valley startup and more MIT lab, albeit one that has quietly expanded across Asia, the Middle East, Europe and North America.
What Gradiant Actually Does
The company specializes in designing and building bespoke water treatment and reuse systems for industrial clients. Its technologies are aimed at enabling factories and plants to reclaim water that would otherwise be discarded as waste, reducing both the amount of water withdrawn from natural sources and the volume of contaminated water discharged.
At the heart of Gradiant’s portfolio are proprietary technologies such as Counter Flow Reverse Osmosis (CFRO), Carrier Gas Extraction (CGE) and Selective Ion Recovery (SIR), developed from the Gradiant founders’ early research at MIT. Unlike traditional methods like reverse osmosis, these systems are designed to handle highly contaminated or complex wastewater streams, enabling clients to extract clean water even from previously unusable sources.
But Gradiant does not sell “one-size-fits-all” machines. Each project is tailored to the customer’s unique needs. For a semiconductor plant in Singapore, this might mean achieving ultrapure water reuse levels of 98%; for a food and beverage factory in Texas, it might be about safely treating wastewater for discharge while minimising energy consumption. The company's approach—sometimes called "solutioneering" internally—is both its competitive advantage and its raison d'être.
Expansion Without the Usual Hype
Gradiant’s growth has been quietly impressive. From its first commercial project in the oil and gas sector, it has gone on to complete over 500 installations worldwide. The company has raised more than $400 million in funding from a mix of institutional investors and private equity firms, achieving so-called “unicorn” status, with a valuation reportedly over $1 billion.
Unlike many green tech firms, Gradiant’s expansion has not been accompanied by flashy marketing campaigns or grandiose statements. Instead, the company has preferred to build credibility client by client, particularly in Asia, where water-intensive industries and growing environmental pressures make its services indispensable. Anurag Bajpayee, never one to speak in superlatives, frames the company’s expansion as a “response to urgent need” rather than a triumph of business.
Inside Gradiant’s Operations
At its core, Gradiant is still an engineering-first company. Anurag Bajpayee and Govindan, both technically trained and heavily involved in the company’s operations, have instilled a culture where R&D is not just a department but the lifeblood of the business. The firm currently holds more than 250 patents globally, a testament to its ongoing commitment to innovation.
But Gradiant’s success is not just about technology. The company has differentiated itself by offering not just equipment but full-service solutions, including project design, construction, operations, and maintenance. This full-stack approach has been particularly attractive to clients in highly regulated industries, who need water management solutions that work seamlessly and reliably without requiring deep in-house expertise.
Gradiant’s clients include some of the world’s largest manufacturers, including Fortune 500 companies in sectors like microelectronics, pharmaceuticals, and energy. Some, like semiconductor producers, rely on Gradiant to help them meet stringent water reuse targets while maintaining ultra-clean production environments.
Navigating a Changing World
Gradiant operates at the intersection of several converging trends: climate change, regulatory pressure, and industrial decarbonisation. In many regions, water scarcity has become the limiting factor for industrial growth, sometimes more than energy availability or supply chain constraints.
While public attention often focuses on domestic water use, it is industries that consume the lion’s share of freshwater. Gradiant's pitch is straightforward: industries will have to do more with less, and Gradiant offers the tools to make that possible.
Anurag Bajpayee is keenly aware of the paradox that water, despite being vital, is often underpriced and undervalued, especially when compared to energy. “We don’t pay what it’s worth, only what it costs,” he told an audience at a recent conference. Yet, the landscape is shifting. Regulators, investors, and companies themselves are increasingly acknowledging water as both a business risk and a social responsibility.
What's Next for Gradiant?
Looking ahead, Gradiant appears poised to play a central role as industries adapt to water scarcity. Yet, Anurag Bajpayee remains cautious about the hype cycle. "The problem we’re working on isn’t going anywhere," he says. "It’s not a question of innovation alone, but of execution—of making sure these solutions actually reach the places that need them most."
In an era where water risk is increasingly material to business, Gradiant’s quiet, technically grounded approach may prove to be exactly what is needed.
(The views and opinions expressed in this article are those of the author and do not necessarily reflect the official policy or position of Eastern Eye. The publication does not endorse or take responsibility for the accuracy of any statements made by the author.)