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Riyadh, July 6: The government of Saudi Arabia has announced health protocols to prevent the spread of the new coronavirus in the 2020 Hajj season, banning gatherings and meetings between pilgrims.

Saudi Arabia decided in June to limit the number of domestic pilgrims attending the Hajj to around 1,000 to prevent the spread of the coronavirus, after barring pilgrims abroad from the rite for the first year in modern times.

Touching the Kaaba, the holiest site in Islam, will be banned during the Hajj this year, and a social distancing space of a meter and a half between each pilgrim during the rituals including mass prayers and while in the Kaaba circling area will be imposed, a statement by the Center for Disease Prevention and Control (CDC) elaborated.

Also, access to holy Hajj sites at Mina, Muzdalifah and Arafat will be limited to those with Hajj permits starting Sunday July 19 till Aug. 2 2020, and wearing masks all the time will be mandatory for both pilgrims and organisers.

Bengaluru, May 18: Indian food delivery startup Swiggy said on Monday it would lay off 1,100 employees, or nearly 14% of its workforce, to cut costs, as a weeks-long nationwide lockdown to curb the coronavirus outbreak hits demand for online food ordering.

The company, backed by South African internet giant Naspers, also said it will scale down adjacent businesses and has already shut several of its cloud kitchens - facilities that only cater to takeaway orders - temporarily or permanently.

“The core food delivery business has been severely impacted and will stay impacted over the short term, but is expected to start growing again after that,” said Sriharsha Majety, co-founder and chief executive at Bengaluru-based Swiggy.

Swiggy, one of India’s best known startups, is among many that are laying off employees and reshaping their business in response to the COVID-19 pandemic, which has forced 1.3 billion Indians indoors and crippled business.

India is currently under a two-month lockdown, and though several curbs are being eased, public places such as restaurants remain closed, hurting restaurants themselves as well as companies such as Swiggy and main rival Zomato.

Washington D.C., May 8: The prime time for brain development in a child's life is the first year, where the infant spends most of the time asleep. It is the time when neural connections form and sensory memories are encoded.

However, when sleep is disrupted, as occurs more often among children with autism, brain development may be affected, too.

New research led by the University of Washington finds that sleep problems in a baby's first 12 months may not only precede an autism diagnosis but also may be associated with altered growth trajectory in a key part of the brain, the hippocampus.

The study, which was published in the American Journal of Psychiatry, researchers report that in a sample of more than 400 taken of 6- to 12-month-old infants, those who were later diagnosed with autism were more likely to have had difficulty falling asleep.

It also states that this sleep difficulty was associated with altered growth trajectories in the hippocampus.

"The hippocampus is critical for learning and memory, and changes in the size of the hippocampus have been associated with poor sleep in adults and older children.

As many as 80 per cent of the children with autism spectrum disorder have sleep problems," said Annette Estes, director of the UW Autism Center and senior author of the study.

"In our clinical experience, parents have a lot of concerns about their children's sleep, and in our work on early autism intervention, we observed that sleep problems were holding children and families back," added Estes, who is also a UW professor of speech and hearing sciences.

"It could be that altered sleep is part-and-parcel of autism for some children. One clue is that behavioural interventions to improve sleep don't work for all children with autism, even when their parents are doing everything just right. This suggests that there may be a biological component to sleep problems for some children with autism," said Estes.

To consider links among sleep, brain development, and autism, researchers at the IBIS Network looked at MRI scans of 432 infants, surveyed parents about sleep patterns, and measured cognitive functioning using a standardized assessment.

At the outset of the study, infants were classified according to their risk for developing autism: Those who were at higher risk of developing autism -- about two-thirds of the study sample -- had an older sibling who had already been diagnosed.

Infant siblings of children with autism have a 20 per cent chance of developing autism spectrum disorder -- a much higher risk than children in the general population.

In the current study, 127 of the 432 infants were identified as "low risk" at the time the MRI scans were taken because they had no family history of autism.

They later evaluated all the participants at 24 months of age to determine whether they had developed autism. Of the roughly 300 children originally considered "high familial risk," 71 were diagnosed with autism spectrum disorder at that age.

Problems with sleep were more common among the infants later diagnosed with an autism spectrum disorder, as were larger hippocampi. No other subcortical brain structures were affected, including the amygdala, which is responsible for certain emotions and aspects of memory, or the thalamus, a signal transmitter from the spinal cord to the cerebral cortex.

The authors note that while parents reported more sleep difficulties among infants who developed autism compared to those who did not, the differences were very subtle and only observed when looking at group averages across hundreds of infants.

Sleep patterns in the first years of life change rapidly as infants transition from sleeping around the clock to a more adult-like sleep/wake cycle. Until further research is completed, Estes said, it is not possible to interpret challenges with sleep as an early sign of increased risk for autism.