中山为什么拉大便拉出血(中山为什么会得痔疮) (今日更新中)

The Centers for Disease Control and Prevention issued new guidance that recent studies have indicated that cloth masks offer more protection against the coronavirus than previously thought.Previous guidance suggested that masks were best used for preventing the spread of the virus. The CDC now believes that masks are effective for both stopping the spread and reception of the virus. The CDC said on Tuesday that multi-layer cloth masks can both block up to 50 to 70% of fine droplets and particles and limit the forward spread of those that are not captured. Overall, cloth masks offer up to 80% blockage in human experiments. The CDC’s analysis found that cloth masks offer comparable protection as surgical masks.“Studies demonstrate that cloth mask materials can also reduce wearers’ exposure to infectious droplets through filtration, including filtration of fine droplets and particles less than 10 microns,” the CDC’s guidance said. “The relative filtration effectiveness of various masks has varied widely across studies, in large part due to variation in experimental design and particle sizes analyzed. Multiple layers of cloth with higher thread counts have demonstrated superior performance compared to single layers of cloth with lower thread counts, in some cases filtering nearly 50% of fine particles less than 1 micron.”The guidance says that mandatory mask wearing can help prevent the need to implement economic shutdowns.“Adopting universal masking policies can help avert future lockdowns, especially if combined with other non-pharmaceutical interventions such as social distancing, hand hygiene, and adequate ventilation,” the CDC said.In an interview with Andrea Mitchell of MSNBC, Dr. Anthony Fauci said that wearing masks is “two-way street.”"Recent data has now shown that as a matter of fact, there's also the added benefit to protect you from droplets and virus that's coming your way," Fauci said Tuesday on MSNBC."“You protect others," he added. "Their masks protect you. And your mask also protects you."In a separate interview on Tuesday, Fauci said that shut downs can be avoided.“We are not talking about shutting down,” Fauci told CNN’s Jake Tapper. “There is always that misunderstanding when we talk about public health measures. We are not talking about shutting down. We are talking about the four or five things I talk about all the time, wearing mask universally, keeping a distance, avoiding congregate settings indoors over outdoors and washing your hands.”Editor's note: A previous version of this story said "masks were best used for spreading the virus" when it should have said "masks were best used for preventing the spread of the virus." That has since been corrected. 2729

The family of Jacob Blake is hosting a gathering in Kenosha, Wisconsin on Tuesday ahead of President Donald Trump's visit to the city.The event, which will be held near the site where Blake was shot seven times in the back by a Kenosha police officer, will include a press conference with local officials and family representatives. The event will also include a community clean-up, a food drive, a healing circle, and a voter registration booth.Several days after police officers shot Blake during an Aug. 23 altercation, protests in Kenosha grew violent. The city estimates that million in property damages have been caused by looting and burning amid the unrest.Last Tuesday, 17-year-old Kyle Rittenhouse shot three protesters, two of them fatally, after he drove 20 miles to protect local businesses. Rittenhouse has been arrested in connection with the homicides; his lawyer says that Rittenhouse was shooting in self-defense.In recent days, protests in Kenosha have been peaceful and without incident.The event held by Blake's family comes hours before a visit to the city by President Donald Trump. Several Democratic politicians, including Kenosha's mayor and Wisconsin's governor, have asked Trump to reconsider, saying his presence could stoke more violence in the city.Blake was shot during an altercation with police on Aug. 23. Police say they were responding to a call about a man at a party who "shouldn't have been there."Police attempted to take Blake into custody but say he was non-compliant. Officers say they tried to use stun guns on Blake but could still not take him into custody.Blake had previously told officers he had a knife in his vehicle. At one point during the altercation, as Blake approached his car, Officer Rusten Sheskey shot Blake in the back at least seven times. A knife was later found on the floorboard of the car.Blake is still hospitalized and is paralyzed from the waist down. Sheskey has been placed on administrative leave but has not been charged with a crime. 2020

The COVID-19 pandemic has hit people of color particularly hard, and one new study says that may be because of racial disparities in treating high blood pressure.According to the American Heart Association's Scientific Sessions, one-third of disparities in treatment may be the result of racial inequalities in prescribing or increasing the dosage of new medications used in treating high blood pressure.The study found that blood pressure control rates are lower in Black patients compared to other racial groups. Black patients also had more missed opportunities for treatment and missed more clinic appointments."A doctor might think a patient is less likely less able to afford medications, and because of that, they choose to not prescribe a certain medication," said Dr. Valy Fontil, an assistant professor of medicine at UCSF and one of the researchers involved in the study. "Or, they might know this person doesn't have transportation to the clinic, and so sometimes it might even be well-intentioned."Fontil says more standardized treatment protocols would help eliminate the disparities and prevent missed opportunities to get someone the medication they need."Sometimes people present, and the main thing that they're there for is not for the blood pressure," he said. "So, the clinician just sort of kind of might ignore the blood pressure. So automating these sort of standardized treatments would tell the clinician that they — even if the patient's not here for blood pressure — you have to address it in some way."Previous studies have also shown Black patients have more apprehension about why someone is giving them more medication. Fontil says one solution is having the patient be part of the treatment decision making.Fontil adds that the increasing number of virtual visits for blood pressure issues could make the racial disparities even worse. 1876

The driver who plowed down pedestrians and cyclists on a New York bike path is a "soldier of the caliphate," the ISIS terror group said on its weekly newspaper, without providing evidence to back up its claim.The attack Tuesday killed eight people and left more than a dozen others injured."One of the Islamic State soldiers in America attacked on Tuesday a number of crusaders on a street in New York City," the al-Naba newspaper reported Thursday.The terror group provided no evidence that ISIS had knowledge of the attack before it happened or it was involved in planning it. The article did not name the attacker.Suspect Sayfullo Habibullaevic Saipov has told authorities that he was inspired to carry out the attack after watching ISIS videos and closely followed the terror group's playbook for an attack.While ISIS did not claim direct responsibility for the attack, it described the attacker as one of its soldiers.Suspect's link to ISISThe 29-year-old Uzbek native was charged with providing material support to ISIS, violence and destruction of motor vehicles, said Joon H. Kim, acting US attorney for the Southern District of New York.Saipov drove a rental truck down a bike path in New York's Lower Manhattan, crashed into a school bus and then jumped out, brandishing imitation firearms, officials said. He was shot by New York police Officer Ryan Nash in the abdomen and taken into custody.He didn't enter a plea Wednesday to the federal terror charges.Saipov was so devoted to ISIS, he wanted to display the terror group's flag in his hospital room, documents show. He had about 90 videos and 3,800 images on a cell phone featuring ISIS propaganda, including video of a beheading, according to the complaint.This is the first time the terror group has put such a claim on its newspaper before releasing it on its media wing, Amaq news agency, which is its first point of publication for claims of responsibility.The wording of the ISIS statement -- not claiming the attack as an outright act of ISIS and saying the person carrying the attack is one of its "soldiers" -- mirrors ISIS' language in statements after an attack in France and the nightclub shooting in Orlando last year.No warning signsThose who crossed Saipov's path are trying to reconcile the man they met and the one they are now hearing about.When approached in the lobby of her Brooklyn apartment building, the suspect's mother-in-law said she was in shock."I don't know what happened," she said.Those who knew him in Tashkent, Uzbekistan, and in at least three states he bounced between since coming to America say they saw no warning signs of Saipov being radicalized."He was happy that he was here, he had a family here, and he was a truck driver and his business was really good," said Makhina Kadirova, a childhood friend.His neighbors described him as a quiet and said his family didn't socialize often.Trump calls for death penaltyOn Twitter, President Donald Trump said Saipov should be executed and added that he "would love" to send him to the Guantanamo Bay detention camp in Cuba."NYC terrorist was happy as he asked to hang ISIS flag in his hospital room. He killed 8 people, badly injured 12. SHOULD GET DEATH PENALTY!' the President tweeted Wednesday night.Presidents typically do not comment on pending criminal cases because their statements could be seen as influencing a potential jury pool.Concrete barriersThe Lower Manhattan bike path where the attack took place has reopened, CNN affiliate WPIX reported, as New York started installing concrete barriers to prevent similar terror incidentsThe work started Thursday as part of a statewide review of shared-use paths, according to the New York State Department of Transportation.A total of 57 barriers are being positioned diagonally along the path, leaving enough space for bicycles but not for larger vehicles, CNN affiliate WABC reported. But some local cyclists think the barriers are problematic."There's no way two bikes can pass each other there and the runners as well," New York City resident James Petty told WABC. "There's going to be accidents."Similar concrete barriers were placed in May after a man drove a car onto a crowded sidewalk in Times Square, killing a teenage woman and injuring at least 22 people.  4290

The CEOs of Twitter, Facebook and Google are facing a grilling by Republican senators making unfounded allegations that the tech giants show anti-conservative bias.The Senate Commerce Committee has summoned Twitter CEO Jack Dorsey, Facebook’s Mark Zuckerberg and Google’s Sundar Pichai to testify for a hearing Wednesday. The executives agreed to appear remotely after being threatened with subpoenas.With the presidential election looming, Republicans led by President Donald Trump have thrown a barrage of grievances at Big Tech’s social media platforms, which they accuse without evidence of deliberately suppressing conservative, religious and anti-abortion views.The chorus of protest rose this month after Facebook and Twitter acted to limit dissemination of an unverified political story from the conservative-leaning New York Post about Democratic presidential nominee Joe Biden, an unprecedented action against a major media outlet. The story, which was not confirmed by other publications, cited unverified emails from Biden’s son Hunter that were reportedly disclosed by Trump allies.Beyond questioning the CEOs, senators are expected to examine proposals to revise long-held legal protections for online speech, an immunity that critics in both parties say enables the companies to abdicate their responsibility to impartially moderate content.The Justice Department has asked Congress to strip some of the bedrock protections that have generally shielded the tech companies from legal responsibility for what people post on their platforms. Trump signed an executive order challenging the protections from lawsuits under the 1996 telecommunications law.“For too long, social media platforms have hidden behind Section 230 protections to censor content that deviates from their beliefs,” Sen. Roger Wicker, R-Miss., the Commerce Committee chairman, said recently.In their opening statements prepared for the hearing, Dorsey, Zuckerberg and Pichai addressed the proposals for changes to so-called Section 230, a provision of a 1996 law that has served as the foundation for unfettered speech on the internet. Zuckerberg said Congress “should update the law to make sure it’s working as intended.”“We don’t think tech companies should be making so many decisions about these important issues alone,” he said, approving an active role for government regulators.Dorsey and Pichai, however, urged caution in making any changes. “Undermining Section 230 will result in far more removal of online speech and impose severe limitations on our collective ability to address harmful content and protect people online,” Dorsey said.Pichai urged lawmakers “to be very thoughtful about any changes to Section 230 and to be very aware of the consequences those changes might have on businesses and consumers.”Assistant Attorney General Stephen Boyd told congressional leaders in a letter Tuesday that recent events have made the changes more urgent. He cited the action by Twitter and Facebook regarding the New York Post story, calling the companies’ limitations “quite concerning.”The head of the Federal Communications Commission, an independent agency, recently announced plans to reexamine the legal protections, potentially putting meat on the bones of Trump’s order by opening the way to new rules. The move by FCC Chairman Ajit Pai, a Trump appointee, marked an about-face from the agency’s previous position.Social media giants are also under heavy scrutiny for their efforts to police misinformation about the election. Twitter and Facebook have slapped a misinformation label on content from the president, who has around 80 million followers. Trump has raised the baseless prospect of mass fraud in the vote-by-mail process.Starting Tuesday, Facebook was not accepting any new political advertising. Previously booked political ads will be able to run until the polls close next Tuesday, when all political advertising will temporarily be banned. Google, which owns YouTube, also is halting political ads after the polls close. Twitter banned all political ads last year.Democrats have focused their criticism of social media mainly on hate speech, misinformation and other content that can incite violence or keep people from voting. They have criticized Big Tech CEOs for failing to police content, homing in on the platforms’ role in hate crimes and the rise of white nationalism in the U.S.Facebook, Twitter and YouTube have scrambled to stem the tide of material that incites violence and spreads lies and baseless conspiracy theories.The companies reject accusations of bias but have wrestled with how strongly they should intervene. They have often gone out of their way not to appear biased against conservative views — a posture that some say effectively tilts them toward those viewpoints. The effort has been especially strained for Facebook, which was caught off-guard in 2016, when it was used as a conduit by Russian agents to spread misinformation benefiting Trump’s presidential campaign.The unwelcome attention to the three companies piles onto the anxieties in the tech industry, which also faces scrutiny from the Justice Department, federal regulators, Congress and state attorneys general around the country.Last week, the Justice Department sued Google for abusing its dominance in online search and advertising — the government’s most significant attempt to protect competition since its groundbreaking case against Microsoft more than 20 years ago.With antitrust in the spotlight, Facebook, Apple and Amazon also are under investigation at the Justice Department and the Federal Trade Commission.___Follow Gordon at https://twitter.com/mgordonap. 5687

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