Long covid infection linked with risk of 'face blindness', warns new study

News Network
March 21, 2023

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New Delhi, Mar 21: Prolonged symptoms of Covid-19 may be associated with difficulty recognising faces, a little-known condition called face blindness, and navigational problems, according to a study.

Previous studies have shown that Covid-19 can cause a range of neurological problems, including the loss of smell and taste, and impairments in attention, memory, speech, and language, known as "brain fog".

The latest research, published in the journal Cortex, is the first to report prosopagnosia, or face blindness, following symptoms consistent with Covid-19.

The condition that can make people fail to recognise familiar faces, has been estimated to affect between 2 and 2.5 per cent of people in the world.

The researchers assessed the case of Annie, a 28-year-old customer service representative and part-time portrait artist in the US, who was diagnosed with Covid-19 in March 2020 and suffered a symptom relapse two months later.

"When I first met Annie, she told me that she was unable to recognise the faces of her family," said Marie-Luise Kieseler, a graduate student at Dartmouth College in the US, adding Annie now relies on voices to recognise people.

Annie also experienced navigational deficits after having Covid-19. She has had difficulty remembering where particular sections in her grocery store are and relies on Google maps and its pin function to remember where she parks her car.

“The combination of prosopagnosia and navigational deficits that Annie had is something that caught our attention because the two deficits often go hand in hand after somebody either has had brain damage or developmental deficits,” said study senior author Brad Duchaine, a professor at Dartmouth.

"That co-occurrence is probably due to the two abilities depending on neighbouring brain regions in the temporal lobe," Duchaine said in a statement.

Dr. Vinit Suri, Senior Consultant, Neurology, Indraprastha Apollo Hospitals, New Delhi noted that the exact mechanisms by which long Covid may cause face blindness are not yet fully understood, but there are several possible explanations.

"Firstly, long Covid can cause a range of neurological symptoms which may affect the brain regions responsible for face recognition, causing difficulty in processing visual information and recognising familiar faces," Suri told PTI.

"Secondly, Covid-19 can cause inflammation and damage to the blood vessels, which can lead to reduced blood flow to the brain. This can cause brain damage and cognitive impairments, including face blindness," he added.

The research team conducted a series of tests with Annie to evaluate her problems with face recognition and determine whether she also has difficulties with other perceptual or cognitive abilities.

In one test, Annie was sequentially presented with 60 images of celebrity faces and was asked to name them. Annie correctly identified 29 per cent of the 48 celebrities whom she was familiar with as compared to most people, who can correctly identify 84 per cent of familiar celebrities.

The second test was a doppelganger test. Annie was shown a celebrity's name and then presented with images of two faces: the face of a celebrity and that of someone similar, and was then asked to identify which face was the famous person.

She identified the celebrity in 69 per cent of the 58 trials, as compared to 87 per cent in the control group.

"Our results from the test with unfamiliar faces show that it wasn't just that Annie couldn’t recall the name or biographical information of a famous person that she was familiar with, but she really has trouble learning new identities," said Kieseler.

The research team also obtained self-reported data from 54 individuals who had long Covid with symptoms for 12 weeks or more, and 32 persons who had reported that they had fully recovered from Covid-19.

Most respondents with long Covid reported that their cognitive and perceptual abilities had decreased since they had Covid.

"It was not just a small concentration of really impaired cases but a broad majority of people in the long Covid group reported noticeable difficulties doing things that they were able to do before contracting Covid-19 without any problems," Kieseler said.

"Our study highlights the sorts of perceptual problems with face recognition and navigation that can be caused by Covid-19 -- it is something that people should be aware of, especially physicians and other health care professionals,” Duchaine added.

Dr. Atul Prasad, Principal Director & HOD Neurology, BLK-Max Super Speciality Hospital, New Delhi said this is the first report of long Covid causing prosopagnosia.

"The more we study the virus, the more we realise how much damage it can cause during acute infection and now after infection has settled," Prasad told PTI.

Suri noted that that not all people with long Covid will develop face blindness, and the severity and duration of symptoms can vary widely.

"Further research is needed to better understand the relationship between long Covid and face blindness and to develop effective treatments and interventions for those affected," he added. 

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News Network
September 3,2024

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A 19-year-old boy, studying in Class 12 in Haryana’s Faridabad, was chased in a car and shot dead by a group of five cow vigilantes who allegedly mistook him for a cattle smuggler, police said on Tuesday.

A Duster car in which the boy, Aryan Mishra, and his friends Harshit and Shanky as well as two other women seated in the back of the vehicle, was chased by the members of cow vigilante group on the night of August 23 for about 30 kilometers near Haryana’s Gadhpuri on the Delhi-Agra National Highway.

Police have identified and arrested all the five accused – Saurabh, Anil Kaushik, Varun, Krishna and Adesh. A report by Hindustan Times quoted police sources as saying that the weapon used to kill the victim was illegal.

All the five accused cow vigilantes were grilled by the cops who revealed that they had received information that on the night of August 23, some suspected cattle “smugglers” were carrying out surveillance in the city in Renault Duster and Toyota Fortuner and picking up cattle in the area.  

The accused also claimed they were told that the alleged cattle smugglers had also called their associates  to pick up cows in a truck from isolated areas in the city.  

The cow vigilantes, who were also in a car, spotted a Duster at Patel Chowk in which Aryan Mishra was seated with his friends.  

The vehicle was being driven by Harshit and was stopped by the accused, but they instead accelerated, following which they opened fire and a bullet hit Aryan Mishra, who was seated in the passenger seat, near his neck.  

After Aryan was shot, Harshit pulled over the SUV near the Gadhpuri toll in Palwal, but the attackers approached and fired another shot into Aryan Mishra’s chest, resulting in his death.

The accused saw the women in the car and realised that they had shot a wrong person after which they fled.  

Police said despite being asked to stop, Harshit sped the vehicle as Shanky, who was also in the car, was recently involved in a dispute with a man and a case had been registered against him. They thought goons were sent to kill them.

With the SUV not stopping and instead running away, the cow vigilantes thought the cattle smugglers were in it and they started to chase the vehicle which broke through the barrier at the Palwal toll plaza.  

The accused have been sent to judicial custody after being presented in a city court.

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News Network
September 9,2024

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New Delhi: A man who recently travelled from a country experiencing mpox transmission has tested positive for the disease, the Union Health Ministry said on Monday.

"The previously suspected case of mpox has been verified as a travel-related infection. Laboratory testing has confirmed the presence of mpox virus of the West African clade-2 in the patient," it said.

The ministry said that it is an isolated case, similar to the earlier 30 cases reported in India from July 2022 onwards. It is not a part of the current public health emergency reported by WHO which is regarding clade 1 of mpox, it underlined.

"The individual, a young male who recently travelled from a country experiencing ongoing mpox transmission, is currently isolated at a designated tertiary care isolation facility. The patient remains clinically stable and is without any systemic illness or comorbidities," the ministry said.

The case aligns with earlier risk assessments and continues to be managed according to established protocols, it said, adding that public health measures, including contact tracing and monitoring, are actively in place to ensure the situation is contained.

"There is no indication of any widespread risk to the public at this time," the health ministry stated.

The World Health Organisation (WHO) last month declared mpox a Public Health Emergency of International Concern (PHEIC) for the second time in view of its prevalence and spread across many parts of Africa.

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News Network
September 5,2024

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The United Nations has warned that Israel is using “lethal war-like tactics” against Palestinians in the occupied West Bank, more than a week after the occupying entity launched a massive military aggression in the Palestinian territory, killing dozens of people.

At a press conference in New York on Tuesday, spokeswoman for the UN Office for the Coordination of Humanitarian Affairs (OCHA), Stéphane Dujarric, said that the Tel Aviv regime had resumed its aggression in Tulkarm and Jenin.

“The UN has recorded more than two dozen fatalities over the past week, including children,” he said, adding that multiple organizations mobilized by the OCHA were set to carry out an assessment in Jenin but were denied access by the Israeli authorities. 

“OCHA warns that access impediments are impacting the ability to provide meaningful humanitarian response,” Dujarric said, noting that the movement of ambulances and medical teams has been impeded and delayed since the onset of the current aggression.

In the early hours of August 28, the Israeli military conducted its biggest operation – dubbed “Camps of Summer” – in the West Bank in over 20 years, deploying hundreds of troops and airstrikes on Jenin, Tulkarem, and Tubas, which are major centers of Palestinian resistance against the occupying entity.

The ongoing military aggression in the West Bank is currently concentrated in the city of Jenin, whose streets and infrastructure have been damaged by over 70 percent since the onset of the “Camps of Summer”, according to its municipality.

Dujarric also warned that Israeli forces continue to employ “lethal war-like tactics” in the West Bank, including airstrikes, with people being killed, injured and displaced.

While in Tulkarem on Saturday, OCHA teams verified that 120 Palestinians, including over 40 children, were displaced due to the destruction of their homes.

“At the time of the assessment, 13,000 people in Nour Shams refugee camp experienced water cut-offs, attributed to damages caused to the water network, and sewage overflow was observed. The teams also noted that the population was traumatized and in need of psychosocial support,” the OCHA report said.

Since the onset of the current aggression in the West Bank, the number of Palestinians killed by Israeli forces has increased to 34. This includes 19 in Jenin, 8 in Tulkarm, 4 in Tubas, and 3 in al-Khalil. The total death toll in the occupied West Bank has now reached 685 since October 7 last year.

The heightened tensions in the occupied West Bank come as the Israeli regime has since October been conducting a barbaric onslaught on the besieged Gaza Strip, claiming the lives of more than 40,000 people, most of them women and children. 

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