Cơ sở xử lý nước thải cũng bị theo dõi

Đăng bởi Bích Nhàn - 17 Dec, 2023
Theo dõi journeyinlife.net trên
phân tích "...ứt" để dự đoán xu hướng dịch bệnh một vùng...
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Over the past year, as people stopped making appointments (đặt lịch hẹn) with health care providers to check for COVID and shifted to taking home tests instead, health officials lost their tight grip (kiểm soát) on case tallies. And in turn, it became tougher to spot a new viral variant (biến thể vi-rút mới) or wave of the pandemic (đại dịch). Thankfully epidemiologists had a solution—in poop, or rather sewage (chất thải).
In September 2020, the Centers for Disease Control and Prevention established the National Wastewater Surveillance System (NWSS) with the goal of collecting and testing local levels of the virus that causes COVID at treatment plants (nhà máy xử lý) across the country. While the idea of turning to poop for data might seem desperate (kinh khủng), the process is fairly high-tech: wastewater treatment facilities (các cơ sở xử lý nước thải) pump out small samples (mẫu thử), which are then shipped to public and private labs for further examination.

At one such place, Biobot Analytics, technicians sift (sàng lọc) out the viral particles using nanoscale magnetic beads (hạt từ tính có kích thước nano) and then run them through a PCR machine—the same device used for the most accurate type of COVID testing. Algorithms parse (phân tích) the results, factoring in local wastewater flow rates and other viral markers, while filtering out the noisy outliers to produce a crystal-clear concentration of COVID-causing virus in each sample.

source: scientificamerican,
Tags: Bích Nhànhealth

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