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Vaccination Rates Drop to Alarmingly Low Levels During Lockdowns

Health + Wellness
Vaccination Rates Drop to Alarmingly Low Levels During Lockdowns
A drop in vaccination rates raises concerns that quarantines might lead to an outbreak of preventable diseases, like the measles. yangna / iStock / Getty Images Plus

A new study released by the Centers for Disease Control found that vaccination rates in Michigan for children younger than two have fallen to alarmingly low rates. One of the more eye-popping statistics was that fewer than half of infants five months or younger have received the immunizations that usually start when they're two months old, according to The New York Times.


The rates in Michigan are likely mirrored across the country, as parents nationwide have been reluctant to schedule well visits out of fear of exposure to COVID-19. That means children nationwide have fallen behind on vaccinations for diseases like measles and pertussis, better known as whooping cough, as The New York Times reported.

In addition to parental fears of coronavirus exposure, the CDC study suggests that stay-at-home orders have also reduced access to doctor offices, as Reuters reported.

The drop in vaccination rates raises concerns that quarantines might lead to an outbreak of preventable diseases, like the measles. As Reuters reported, the CDC researchers analyzed the data from vaccine doses given to children at ages one, three, five, seven, 16, 19 and 24 months this year and the prior four years. In the 16-month age group, coverage with all recommended vaccines declined. The rate of measles vaccinations in particular fell to 71 percent this year from 76 percent last year.

The total number of vaccines given to children under two dropped more than 15 percent compared to the previous two years.

"The observed declines in vaccination coverage might leave young children and communities vulnerable to vaccine-preventable diseases such as measles," the CDC scientists wrote in the report, according to Reuters. "If measles vaccination coverage of 90%-95% ... is not achieved, measles outbreaks can occur."

Just as the coronavirus is disproportionally affecting poor and minority communities, the poor are receiving the fewest vaccines, according to the study. The report found that up-to-date vaccination coverage was lower for children enrolled in Medicaid, the federal government's health insurance program for the poor, than for those who were not enrolled, according to CNBC.

Angela Shen, a research scientist at Children's Hospital of Philadelphia and the co-author of the study, said the falling rates in Michigan were troubling and quite likely representative of nationwide trends, as The New York Times reported.

"Now, you're not just dealing with Covid," she said, to The New York Times. "Now you're contending with common vaccine-preventable diseases."

It's not just the U.S. that is seeing a dip. At the end of April, the World Health Organization warned that mass vaccination programs that had been suspended in developing countries put kids at risk of contracting measles or polio, as CNBC reported.

"Disease outbreaks must not remain a threat when we have safe and effective vaccines to protect us," said Dr. Tedros Adhanom Ghebreyesus, WHO director-general, in a WHO statement. "While the world strives to develop a new vaccine for COVID-19 at record speed, we must not risk losing the fight to protect everyone, everywhere against vaccine-preventable diseases. These diseases will come roaring back if we do not vaccinate."

"It's a really scary thought," said Matthew L. Boulton, a professor of epidemiology and preventive medicine at the University of Michigan, to The New York Times. "We've made tremendous progress around the world, especially in many low-income countries. This literally could set us back years in our control of vaccine-preventable diseases, in both high- and low-income countries."

Since immunization requires in-person visits, the CDC study recommended several to keep the services going, including offering specific clinics or rooms for child vaccination, reducing the number of patients on site at a given time, having patients receive vaccinations from their vehicles in the parking lot and having providers work with families to identify children missing recommended vaccinations, according to Reuters.

Shen would like to see parents taking their kids for immunizations as the country starts to reopen.

"You are prone to potentially seeing measles outbreaks as communities and jurisdictions in Michigan — and arguably in other parts of the country — open up," she said to The New York Times. "This is a big week for opening up, and public health wants you to come in and get your shots."

A net-casting ogre-faced spider. CBG Photography Group, Centre for Biodiversity Genomics / CC BY-SA 3.0

Just in time for Halloween, scientists at Cornell University have published some frightening research, especially if you're an insect!

The ghoulishly named ogre-faced spider can "hear" with its legs and use that ability to catch insects flying behind it, the study published in Current Biology Thursday concluded.

"Spiders are sensitive to airborne sound," Cornell professor emeritus Dr. Charles Walcott, who was not involved with the study, told the Cornell Chronicle. "That's the big message really."

The net-casting, ogre-faced spider (Deinopis spinosa) has a unique hunting strategy, as study coauthor Cornell University postdoctoral researcher Jay Stafstrom explained in a video.

They hunt only at night using a special kind of web: an A-shaped frame made from non-sticky silk that supports a fuzzy rectangle that they hold with their front forelegs and use to trap prey.

They do this in two ways. In a maneuver called a "forward strike," they pounce down on prey moving beneath them on the ground. This is enabled by their large eyes — the biggest of any spider. These eyes give them 2,000 times the night vision that we have, Science explained.

But the spiders can also perform a move called the "backward strike," Stafstrom explained, in which they reach their legs behind them and catch insects flying through the air.

"So here comes a flying bug and somehow the spider gets information on the sound direction and its distance. The spiders time the 200-millisecond leap if the fly is within its capture zone – much like an over-the-shoulder catch. The spider gets its prey. They're accurate," coauthor Ronald Hoy, the D & D Joslovitz Merksamer Professor in the Department of Neurobiology and Behavior in the College of Arts and Sciences, told the Cornell Chronicle.

What the researchers wanted to understand was how the spiders could tell what was moving behind them when they have no ears.

It isn't a question of peripheral vision. In a 2016 study, the same team blindfolded the spiders and sent them out to hunt, Science explained. This prevented the spiders from making their forward strikes, but they were still able to catch prey using the backwards strike. The researchers thought the spiders were "hearing" their prey with the sensors on the tips of their legs. All spiders have these sensors, but scientists had previously thought they were only able to detect vibrations through surfaces, not sounds in the air.

To test how well the ogre-faced spiders could actually hear, the researchers conducted a two-part experiment.

First, they inserted electrodes into removed spider legs and into the brains of intact spiders. They put the spiders and the legs into a vibration-proof booth and played sounds from two meters (approximately 6.5 feet) away. The spiders and the legs responded to sounds from 100 hertz to 10,000 hertz.

Next, they played the five sounds that had triggered the biggest response to 25 spiders in the wild and 51 spiders in the lab. More than half the spiders did the "backward strike" move when they heard sounds that have a lower frequency similar to insect wing beats. When the higher frequency sounds were played, the spiders did not move. This suggests the higher frequencies may mimic the sounds of predators like birds.

University of Cincinnati spider behavioral ecologist George Uetz told Science that the results were a "surprise" that indicated science has much to learn about spiders as a whole. Because all spiders have these receptors on their legs, it is possible that all spiders can hear. This theory was first put forward by Walcott 60 years ago, but was dismissed at the time, according to the Cornell Chronicle. But studies of other spiders have turned up further evidence since. A 2016 study found that a kind of jumping spider can pick up sonic vibrations in the air.

"We don't know diddly about spiders," Uetz told Science. "They are much more complex than people ever thought they were."

Learning more provides scientists with an opportunity to study their sensory abilities in order to improve technology like bio-sensors, directional microphones and visual processing algorithms, Stafstrom told CNN.

Hoy agreed.

"The point is any understudied, underappreciated group has fascinating lives, even a yucky spider, and we can learn something from it," he told CNN.

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