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New Delhi, Jul 3: Accredited Social Health Activists (ASHAs) in Karnataka have emerged as a "crucial pillar in the state's success" in combating Covid-19, the Union Health Ministry said on Friday.

Acknowledging and praising their work, the ministry said they have been actively participating in household surveys in the state, screening inter-state passengers, migrant workers and others in the community for symptoms of the infection,

“Around 42,000 ASHAs have emerged as a crucial pillar in the state's success” in combating Covid-19, the ministry said.

"Recognizing the increased vulnerability of certain population groups to Covid-19, in a one-time survey to identify households with the elderly, persons with co-morbidities, and immune-compromised individuals, about 1.59 crore households were covered," the ministry said in a statement.

ASHAs regularly monitor such high-risk groups in their area with a periodicity of follow-up visits varying from once a day in the containment zones to once every 15 days in other areas, it said.

They also visit the houses of persons complaining influenza-like-illness (ILI) symptoms and severe acute respiratory infections (SARI), besides high-risk individuals who have called the state health department helpline numbers, the ministry said.

ASHAs are a part of the Rural Task Force, headed by Panchayat Development Officer (PDO) at the Gram Panchayat level, for addressing public grievances on both Covid-19 and non-Covid-19 related services.

ASHAs are trained female community health activists selected from the village itself and accountable to it. They are trained to work as an interface between the community and the public health system.

In the urban areas too, they have been at the forefront of dissemination of various awareness activities in fever clinics and swab collection centres in urban areas.

They have also actively screened cases of ILI and SARI in urban areas. They are also part of the screening teams at international and interstate check-posts.

Karnataka has reported 272 Covid-19 deaths and 18,016 cases, according to the health ministry data updated at 8 AM.

Mangaluru, May 8: Migrant workers, stranded in Karnataka due to lockdown, staged a protest on Friday at the Central Railway Station here, demanding to be sent back to their respective native places.

The workers demanded the state government to take measures and send them back to their homes.

Maintaining social distancing and covering their faces with masks, the workers were holding placards which read -- "We want to go home Jharkhand, We want justice and we want to go home."

They appealed to the state government to arrange trains and buses to ferry them to their native places and threatened to walk home if denied transport.

Several protests have erupted in different parts of the country, such as Andhra Pradesh and Kerala, as stranded labourers took to the roads demanding to be sent back home.

The Ministry of Home Affairs on May 1 had issued an order to extend the ongoing lockdown by two more weeks from May 4 with some relaxations.

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.