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U.S. Sewer Data Warns of a New Bump in Covid Cases After Lull

U.S. Sewer Data Warns of a New Bump in Covid Cases After Lull

As hybrid cars go longer with lesser fuel, similarly hybrid immunity will last longer too.

According to two recent studies,  It is evident that if we are among the Covid survivors then getting Covid vaccine will be an additional shield for us. Let’s  not miss out to have that stronger immunity armor around us . If not infected yet, you are at the risk of getting infection, but having full vaccination will strengthen your body’s defence system and will help your body to fight back.

We are planning to have one day every week as a Vaccination day. Complete schedule will be announced soon. Stay tuned and keep taking care of yourself and your loved ones. “


Bilal Piracha MD

Clinical Assistant Professor Emergency and Family Medicine.

Please read the CNN article below

Data from wastewater can spot a rise in infections before it shows up through positive tests

A wastewater network that monitors for Covid-19 trends is warning that cases are once again rising in many parts of the U.S., according to an analysis of Centers for Disease Control and Prevention data by Bloomberg. 

More than a third of the CDC’s wastewater sample sites across the U.S. showed rising Covid-19 trends in the period ending March 1 to March 10, though reported cases have stayed near a recent low. The number of sites with rising signals of Covid-19 cases is nearly twice what it was during the Feb. 1 to Feb. 10 period, when the wave of omicron-variant cases was fading rapidly.


It’s not clear how many new infections the signs in the sewage represent and if they will turn into a new wave, or will be just a brief bump on the way down from the last one. In many parts of the country, people are returning back to offices and mask rules have been loosened — factors that can raise transmission. At the same time, warmer weather is allowing people to spend more time outside, and many people have recently been infected, which may offer at least temporary protection against getting sick again – factors which would keep cases down.

“While wastewater levels are generally very low across the board, we are seeing an uptick of sites reporting an increase,” Amy Kirby, the head of the CDC’s wastewater monitoring program, said in an email to Bloomberg. “These bumps may simply reflect minor increases from very low levels to still low levels. Some communities though may be starting to see an increase in Covid-19 infections, as prevention strategies in many states have changed in recent weeks.”

Bloomberg reviewed data for more than 530 sewage monitoring sites, looking at the most recent data reported during the 10-day window from March 1 to March 10. Out of those sites, 59% showed falling Covid-19 trends, 5% were roughly stable, and 36% were increasing. Rises or declines are measured over a 15-day period.


Fewer sites had data during the Feb. 1 to Feb. 10 window. During that period, 80% of sites showed a decreasing trend, 5% were stable, and 15% were rising.


Colors show change in proportion of virus detected in wastewater

Source: U.S. CDC; data are for March 1-10.

Note: For sewersheds covering multiple counties, each county is represented and the data for those place may repeat. Where there are multiple sample sites in a county, the one serving the largest population is shown.


Note: For sewersheds covering multiple counties, each county is represented and the data for those place may repeat. Where there are multiple sample sites in a county, the one serving the largest population is shown.

Wastewater samples can’t tell how many people have Covid-19. Instead, they measure how much of the virus is being found in sewer water. A high concentration in a sample can indicate a rising number of infections, often days before those cases show up in tests. 

Official case numbers determined through Covid tests have become increasingly unreliable. With wider access to at-home tests, many infections — particularly mild ones — are never reported. The proportion of unreported cases can be even higher in the middle of surges and at times when tests have been hard to come by. 


In the greater New York City area, for example, there are signs of an increase. While most of the region’s sampling sites do not have recent data, a wastewater site in Fairfield, Connecticut,  shows a high rate of increase. A site in Nassau County shows a moderate increase in Covid-19 detection. 


Source: U.S. Centers for Disease Control and Prevention

So far, the warning given by the sewer networks hasn’t shown up in case numbers and the number of patients being hospitalized for Covid-19 is still near recent lows. The 65-years-and-older population in the U.S. — among the most vulnerable to severe Covid-19, hospitalization and death — is also the country’s best-vaccinated demographic. Eighty nine percent of that group is fully vaccinated, and 67% of those people have received a booster dose. 

According to the CDC’s latest community levels rating, 98% of the U.S. population is in places with a “low” community level rating. Those ratings, however, are based on case numbers and hospitalizations. Wastewater data can often pick up a rise in cases several days before case numbers rise.

Cases are on the rise in several European countries after the continent went through a similar pattern to the U.S. Germany, Switzerland and Austria, as well as other European countries, have all reported significant increases in case numbers over the last two weeks. U.S. trends often follow what happens in Europe, given the rough similarities in the climate, population and public health approach. 

Courtesy: Bloomberg

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