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US Disease Control and Prevention Centers have made several changes to their coronavirus guidance over the past eight months to reflect the latest research surrounding the highly infectious virus. Tuesday, the CDC surprised health experts with their last update involving tests.

According to the CDC website, people without symptoms no longer need to be tested for Covid-19 even if they are in contact with other positive tested people.

"If you are in close contact (within 6 feet) of a person with a COVID-19 infection for at least 15 minutes, but you do not have symptoms, you do not necessarily need a test Unless you are a vulnerable individual or your health care, public health or public health or local or local health recommends to take a ", reads thenew update.

This news seemed to surpriseDr. Anthony Fauci, the best infectious infectious expert of the nation and a member of the Coronavirus working group."I was under the general anesthesia in the operating room" - eliminate a polyp on its vocal cord ... "and was not part of discussion or deliberation regarding the new test recommendations," said Fauci to CNN, chief medical correspondent, Dr. Sanjay Gupta, who read the statement of Fauci on the air. "I am concerned about the interpretation of these recommendations and worried, it will give people the incorrect hypothesis that the asymptomatic propagation is not a big concern. In fact, it is."Read reading to decide when you should be tested and to protect yourself and protect your other during this pandemic, do not miss this essential list of theWithout signs that you have already had coronavirus.

"Everyone does not need to be tested" but Dr. Fauci does not agree

"Everyone does not need to be tested," says the agency's website. "If you are tested, you should belong to the quarantine / isolate at home while waiting for the test results and follow the opinion of your health care provider or a public health professional."

The CDC always encourages the tests for anyone who is symptomatic and issued a reminder on asymptomatic propagation. "It's important to realize that you can be infected and spread the virus, but you feel good and has no symptoms," they explain.

This is substantially different from their previous suggestion, which urged the importance of viral tests if a person had been exposed to the virus. Fauci, Director of the National Institute of Allergy and Infectious Diseases, said it was important, previously.

"A spokesman of the National Institute of Allergy and Infectious Diseases, which Fauci led, said that Fauci recalled" quickly review a version of the guidelines "who had previously disseminated", according toNBC News. "At the time, he was not struck by the potential implications of this particular change in the version he examined," said the spokesman. "Now, read them carefully, it worried that the revised guidelines could be interpreted as the importance of the asymptomatic propagation of the virus in the Community," the spokesman, adding that "if" Persons who come into close and prolonged contact with documentation The case of Covid-19 became infected and are asymptomatic and are not tested and given results in due time, asymptomatic propagation to others could occur. "

"It's potentially dangerous," said another expert

"Tests are recommended for all narrow contacts of people with SARS-COV-2 infection. Due to the potential for asymptomatic and pre-symptomatic transmission, it is important that contacts of individuals with sars- infection. COV-2 are quickly identified and tested, "the CDC declarationread.

Some experts fear that these last guidelines prevent the identification of cases during the period preceding the start of symptoms - which is when they could be the most contagious.

"It's potentially dangerous," Dr. Krutika Kuppalli, a doctor of infectious disease in Palo Alto, Calif, "saidNew York Times. Restrict tests only people with obvious symptoms of COVID-19 means "you are not looking for many people who are potential spreaders of the disease," she added. "I feel like that's going to aggravate things."

"Wow, that is, a walk," added Susan Butler-Wu, a clinical microbiologist at the University of California Medicine School. "We are in the middle of a pandemic, and it's a very big change."

Dr. Butler-Wu also stressed theNyt That it is worried that people do not worry misinterpreting the guidelines as involving that without symptoms were unable to disseminate the virus to others - what science has proven to be false.

TheNyttense at the CDC and asked them the reason for the change of recommendation. A representative of the Organization led questions at the Ministry of Health and Social Services, which told them that "the decision to be tested should be done in collaboration with public health officials or your care provider of health based on individual circumstances and the status of Community spread. "As for yourself: go through this pandemic with your healthier, do not miss these 37 places you are most likely to catch coronavirus .