Wednesday, July 22, 2020

How Dharavi, Asia’s biggest slum, fought against COVID-19

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Inshiya Nalawala

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How Dharavi, Asia’s biggest slum, fought against COVID-19

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Global Views 360

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July 22, 2020

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A still from Dharavi, Mumbai

A still from Dharavi, Mumbai | Source: M M via  Flickr

Imagine a place where 8-10 people live in 100 square feet structures. A place which squeezes close to 6,50,000 people, 5,000 small factories, and about 15,000 single-room workshops in just 2.5 square kilometer area. Welcome to  Dharavi, the biggest slum of Asia situated in the heart of fashion, entertainment, and commercial capital of India, Mumbai.

When the first COVID-19 case was discovered in Dharavi, it caused massive panic among the citizens as well as officials. Social distancing is virtually impossible to achieve in Dharavi, which is a maze of narrow congested lanes with tenements on either side of it and where 80% of the population use community toilets.

With their fingers crossed, people were speculating about Dharavi turning into a graveyard. These fears turned out to be misplaced and three months later Dharavi won praise from the WHO for effectively restricting the spread of coronavirus. According to the official data, the COVID-19 case doubling rate improved greatly, from 18 days in April, to 43 days in May, to 108 days in June, and 480 days in July.

Mr. Kiran Dighavkar, Assistant Commissioner of the top civic body of Mumbai, Brihanmumbai Municipal Corporation (BMC) said that their undertaking of an aggressive strategy of 4T’s - Tracing, Tracking, Testing & Treating, is the key to Dharavi’s successful fightback against the pandemic. The fightback plan was aptly coined "Mission Dharavi".

Extensive screening and testing of residents was done to detect the symptoms for coronavirus in "fever camp" which were set up by medical workers in different parts of the slum everyday. Many buildings such as schools, wedding halls, and sports complexes were overtaken by the civic authorities and were repurposed as quarantine facilities. A 200-bed hospital was also set up in record 14 days.

The BMC commissioner, I S Chahal said “Proactive screening helped in early detection, timely treatment and recovery.” Close to six hundred thousand people were screened, 14,000 people tested and 13,000 quarantined in nearby institutions, schools, marriage halls, and sports complexes. Furthermore, continuous monitoring of people’s movement using drones helped reinforce containment measures and scaled progress swiftly.

To further strengthen the measure, locals of the community emerged as “COVID Yodhas” (warriors) to address the concerns, a senior official said.  Many well endowed citizens and NGO’s provided Free meals, ration, PPE gear, oxygen cylinders, gloves, masks, medicines, and ventilators to residents and doctors.th July

On 8th July 2020 Dharavi recorded a total of 2,335 COVID-19 out of which 1,735 patients have recovered and there are only 352 active cases at present. Only 82 deaths were recorded in Dharavi till 8th July as against more than 4500 in the whole of Mumbai.

This phenomenal success has given the world a yet simple and effective technique in curbing the spread of the deadly virus. World Health Organization (WHO) chief Tedros Adhanom Ghebreyesus, in a virtual press conference in Geneva, acknowledging the efforts of various nations and Dharavi to contain the virus, said that “There are many examples from around the world that have shown that even if the outbreak is very intense, it can still be brought back under control”. Further, he added, “And some of these examples are Italy, Spain, and South Korea, and even in Dharavi -- a densely packed area in the megacity of Mumbai -- a strong focus on community engagement and the basics of testing, tracing, isolating and treating all those that are sick is key to breaking the chains of transmission and suppressing the virus.”

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February 4, 2021 4:59 PM

Xenobots: The first ever ‘living’ robots

Creating robots using artificial intelligence has become quite normal in this century. But a robot built with an amalgamation of artificial intelligence and biology is quite enthralling. Researchers from University of Vermont and Tufts University collaborated to conceive a living robot called ‘Xenobot’.

This astounding, millimeter-wide chunk of technology is considered to be ‘living’ as it is created by stem cells from the embryo of Xenopus laevis, an African frog species. These stem cells were selected in such a way that they grew out to be heart and skin cells.

Prior to this, computer scientists at the University of Vermont ran an evolutionary algorithm, which imitates natural selection, on their supercomputer, which yielded the most suitable structures of the robot. After selecting the best designs, biologists at the Tufts University moulded the skin and heart cells into the forms which closely resembled the outputs of the algorithm, through microsurgery.

The resulting biological bodies looked like tiny aliens. "They're neither a traditional robot nor a known species of animal. It's a new class of artifact: a living, programmable organism" said Joshua Bongard, a computer scientist and robotics expert at the University of Vermont, who was involved in the research. Detailed results are published in the Proceedings of the National Academy of Sciences (PNAS) research paper on January 13, 2020.

Newly created xenobots were found to swim in any liquid medium for at least 10 days (or more if put in a nutrient-rich environment) without being fed with any nourishment, since the cells have a reserve of embryonic energy.

Another incredible facet of this technology is that it can revamp any of its parts efficiently upon damage. While technological pieces made out of plastic and metal might cause a lot of pollution after they are disposed of, xenobots are completely biodegradable, causing no harm to the environment. "These xenobots are fully biodegradable, when they're done with their job after seven days, they're just dead skin cells" said Bongard.

One might wonder how these miniscule cell blotches are helpful to us. Well, Xenobots may be very small in size but they can achieve feats which almost no huge, metal-made robot can.

These living robots will be useful in certain fields like medicine wherein they could be utilized to clear plague from our arteries. They can also be modelled with pouches which enables them to carry certain substances. This property can be used for delivering drugs in specific parts of our bodies. Xenobots can also be a boon in the field of cancer biology as they can help reprogramming tumors into normal cells.

Additionally, these tiny biological bodies can be oceans’ best friends. With contaminants like radioactive chemicals, plastics and microplastics creating havoc in the marine world, an immediate need to clean up our water bodies arises. Many xenobots were observed to be moving in circles (an attribute of the beating heart cells), which resembled a ‘clean-up’ motion. Hence, these tiny robots can be a perfect tool to eradicate microplastics from the oceans as well as eliminating nuclear wastes.

Although this technology may be promising, certain ethical questions arise with every technological development, especially those involving biological manipulations. If programmed in a certain way, xenobots can also take over natural biological functions (maybe nerve cells to hamper brain function) and this can be used for nasty purposes.

Michael Levin who directs the Center for Regenerative and Developmental Biology at Tufts said, “That fear is not unreasonable. When we start to mess around with complex systems that we don't understand, we're going to get unintended consequences”. Levin and Bongard are extensively working towards understanding how complex systems work. "There's all of this innate creativity in life. We want to understand that more deeply—and how we can direct and push it toward new forms" said UVM's Josh Bongard.

Like any new disruptive technological innovation, the Xenobots also have the potential to prove boon or bane for the humankind. Let's hope it turns out more boon than bane.

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