Wednesday, July 1, 2020

Sweden’s No Lockdown Policy: How That Changed The Outcome

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Nikhita Gautam

Article Title

Sweden’s No Lockdown Policy: How That Changed The Outcome

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Global Views 360

Publication Date

July 1, 2020

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Anders Tegnell during the daily press conference outside the Karolinska Institute in Stockholm, Sweden

Anders Tegnell during the daily press conference outside the Karolinska Institute in Stockholm, Sweden  |  Source: Frankie Fouganthin   via Wikimedia

Sweden has gone against conventional wisdom in its response to the COVID-19 situation. While the neighbouring countries like Denmark, Finland and Norway imposed strict lockdown on the places and services frequented by the public, Sweden has chosen to not do so at all during the initial phases when COVID-19 started taking the shape of a worldwide pandemic. The public places like Cafes, restaurants, gyms, malls, playgrounds, ski slopes and some of the schools were kept open all across Sweden.

The country’s fight against the threat of pandemic was handled exclusively by the Public Health Authority, with no political interference. They believed that a lockdown only serves to delay the virus, which is not necessary since the health services are equipped to deal with the cases. They also made it clear that achieving herd immunity is also not their aim. The public authorities in Sweden instead relied on the public's sense of responsibility, and appealed to them to do frequent hand washing, observe social distancing and keep people over 70 years old from going out.

The state epidemiologist, Anders Tegnell, made multiple statements about the state’s unusual approach, such as 1) “Once you get into a lockdown, it’s difficult to get out of it,”, “How do you reopen?  When?” 2) “There is no evidence whatsoever that doing more at this stage would make

any difference. It’s far better to introduce stringent measures at very specific intervals, and keep them running for as little time as possible” , 3) " As long as the healthcare system reasonably can cope with and give good care to the ones that need care, it's not clear that having the cases later in time is better”.

The assumption of public responsibility did not work for Sweden and there were people out on the streets, in cafes, restaurants and playgrounds. Not wearing a mask was the social norm instead of the reverse. The models for charting the virus spread given by the concerned authorities also turned out to be faulty forcing them to rescind it. Over 2000 Swedish researchers and doctors signed a petition which claimed that there was not enough testing,tracking or isolation in the country. They believed that the authority has clearly not planned their response and that the authority’s claim for herd immunity has very little scientific basis, even though the government has repeatedly claimed that herd immunity is not what they were aiming for.

Sweden’s lax approach to the combating of coronavirus forced its neighbouring Scandinavian countries to close the border for the Swedish citizens. Some of the Swedish officials were worried for the possible harm to the long term relations between Sweden and its neighbours.  Also, the plan of letting life go on as usual to avoid the economic recession occurring due to a lockdown also failed as it didn’t shield  the country from economic slowdown.

Here comes the question; was the lockdown successful or not? There are some comparisons that have been drawn which indicate more deaths per 100,000 people than in nearby countries with homogenous population, even though it is significantly lesser than some of the European countries. While the infections rates are double that of Denmark, the death rates in comparison are much higher. This difference has been attributed to the fact that approximately half of these deaths have occurred in old care homes despite the stated priority of the officials to protect the elderly. This has been in part to the volunteer program, which replaced symptomatic old age home cares with new volunteers, hence increasing exposure. Another factor is the lack of protective equipment in such homes, along with laws preventing administration of medical procedures without the presence of doctors. There were reports of people threatened with lawsuits for banning visitors.

All of this led to Mr.Tegnell claiming that the ideal policy would have been something between what Sweden adopted and what the other countries did, in the light of what they know now. However this claim of Mr.Tegnell will be put to test when the second wave comes, later in time.

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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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