Study indicates that sewage in Fortaleza has a low concentration of coronaviruses

the castle Among the Brazilian capitals that have the lowest load of the new Corona virus in the sewage system. This is indicated by the new monitoring bulletin issued by the National Water and Sanitation Agency (ANA) on Wednesday, 24, based on data collected up to November 13. In addition to the capital, Ceará, the survey indicates low levels of viral concentration in the primary sewage systems of Belo Horizonte, Curitiba and Recife. On the other hand, Brasilia and Rio de Janeiro maintained high rates.

According to the data of the Covid Esgotos Surveillance Network, between the 42 epidemic weeks (17 to 23 October) and 45 (7 to 13 November), the novel coronavirus was carried in wastewater in Fortaleza There was a slight increase, but levels are still considered low. Specifically in the 45th week, the capital of Ceará recorded the second highest viral load in the historical series, which began in July of this year: 18.98 billion copies of the virus per day per 10,000 inhabitants. Until then, the highest rate was observed in week 23 (6-12 June), when 33.99 billion copies were verified.

In Belo Horizonte, the latest survey showed a variance between 11.2 and 22.4 billion copies per day. In the capital of Pernambuco, which also recorded low viral loads, rates ranged from zero to 3.4 billion copies every 24 hours.

in Brasilia, Indexes light up alarm in sewage companies. According to the study, in the analysis between November 7 and 13, the pregnancy was 137.9 billion copies per day per 10,000 residents, cutting off the downward trend recorded in the previous weeks.

In Rio de Janeiro, the data is also worrying. The city recorded differences between 82.03 and 293.81 billion copies in the two weeks analyzed. Despite this, data from the previous four weeks was monitored Indicates a general trend of reduction Viral load in some parts of the city.

About monitoring

The Covid Esgotos Monitoring Network monitors viral loads and concentrations of the novel coronavirus in wastewater for six capitals and cities that make up the metropolitan areas of Belo Horizonte, Brasilia, Curitiba, Fortaleza, Recife and Rio de Janeiro. The work, which is considered one of the largest Brazilian initiatives to monitor Covid-19 in wastewater Expand information to fight the epidemic.

The researchers’ intent is that the results measured in the surveys can help local health authorities make decisions about maintaining or easing control measures to spread Covid-19. Data can too Provide early warnings The risks of increasing infection with the virus in a regional way.

Through the studies, the group intends to identify trends and changes in the occurrence of the virus in wastewater in the different monitored areas, which can help in understanding the dynamics of virus circulation. Another line of action is wastewater mapping Identify areas with a high incidence of the disease and use the data obtained as an early warning tool for new disease outbreaks.

The network is coordinated by ANA and the National Institute of Science and Technology in Sustainable ETEs. The initiative is supported by the National Council for Scientific and Technological Development (CNPq) and with the cooperation of researchers from the following educational institutions: University of Brasilia (UnB), Federal University of Minas Gerais (UFMG), Federal University of Pernambuco (UFPE), Federal University of Ceará (UFC) and Federal University of Paraná (UFPR). ) and the Federal University of Rio de Janeiro (UFRJ). The network also receives support from local sanitation companies and state health departments.

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