background preloader

Spreading Disease

Facebook Twitter

What the data say about asymptomatic COVID infections. How many people don’t experience any symptoms after becoming infected with SARS-CoV-2?

What the data say about asymptomatic COVID infections

And what is their role in spreading COVID-19? These have been key questions since the beginning of the pandemic. Now, evidence suggests that about one in five infected people will experience no symptoms, and they will transmit the virus to significantly fewer people than someone with symptoms. But researchers are divided about whether asymptomatic infections are acting as a ‘silent driver’ of the pandemic. Although there is a growing understanding of asymptomatic infections, researchers say that people should continue to use measures to reduce viral spread, including social distancing and wearing masks, regardless of whether they have symptoms. Project. Extremely Gross Simulation Demonstrates How Coronavirus Spreads At The Dinner Table. How Did Previous Pandemics Come to an End?

Alarming COVID-19 Data Shows Third Wave Brewing for U.S. One Chart For Anyone Who Still Thinks COVID-19 Is No More Deadly Than The Flu. Legionnaire's Disease pathogen found in water at some schools reopening after Covid-19 lockdowns. Great, another thing for worried parents to worry about in Fall, 2020.

Legionnaire's Disease pathogen found in water at some schools reopening after Covid-19 lockdowns

Staphylococcus aureus. Species of Gram-positive bacterium Staphylococcus aureus on basic cultivation media Staphylococcus aureus is a Gram-positive, round-shaped bacterium that is a member of the Firmicutes, and it is a usual member of the microbiota of the body, frequently found in the upper respiratory tract and on the skin.

Staphylococcus aureus

It is often positive for catalase and nitrate reduction and is a facultative anaerobe that can grow without the need for oxygen.[1] Although S. aureus usually acts as a commensal of the human microbiota it can also become an opportunistic pathogen, being a common cause of skin infections including abscesses, respiratory infections such as sinusitis, and food poisoning.

Pathogenic strains often promote infections by producing virulence factors such as potent protein toxins, and the expression of a cell-surface protein that binds and inactivates antibodies. Staph infections. Overview Staph infections are caused by staphylococcus bacteria, types of germs commonly found on the skin or in the nose of even healthy individuals.

Staph infections

Most of the time, these bacteria cause no problems or result in relatively minor skin infections. But staph infections can turn deadly if the bacteria invade deeper into your body, entering your bloodstream, joints, bones, lungs or heart. Medieval DNA suggests Columbus didn’t trigger syphilis epidemic in Europe. In the late 1400s, a terrifying disease erupted in Europe, leaving victims with bursting boils and rotting flesh.

Medieval DNA suggests Columbus didn’t trigger syphilis epidemic in Europe

The syphilis epidemic raged across the continent, killing up to 5 million people. For centuries, historians, and archaeologists have debated the origin of the disease, with some blaming Christopher Columbus and his crew for bringing it back from the Americas. Remains of 17th Century Bishop Support Neolithic Emergence of Tuberculosis. When Anthropologist Caroline Arcini and her colleagues at the Swedish Natural Historical Museum discovered small calcifications in the extremely well preserved lungs of Bishop Peder Winstrup, they knew more investigation was needed.

Remains of 17th Century Bishop Support Neolithic Emergence of Tuberculosis

“We suspected these were remnants of a past lung infection,” says Arcini, “and tuberculosis was at the top of our list of candidates. DNA analysis was the best way to prove it.” Nonpharmaceutical Measures for Pandemic Influenza in Nonhealthcare Settings—Personal Protective and Environmental Measures - Volume 26, Number 5—May 2020. Influenza pandemics occur at irregular intervals when new strains of influenza A virus spread in humans (1).

Nonpharmaceutical Measures for Pandemic Influenza in Nonhealthcare Settings—Personal Protective and Environmental Measures - Volume 26, Number 5—May 2020

Influenza pandemics cause considerable health and social impact that exceeds that of typical seasonal (interpandemic) influenza epidemics. One of the characteristics of influenza pandemics is the high incidence of infections in all age groups because of the lack of population immunity. Although influenza vaccines are the cornerstone of seasonal influenza control, specific vaccines for a novel pandemic strain are not expected to be available for the first 5–6 months of the next pandemic. Antiviral drugs will be available in some locations to treat more severe infections but are unlikely to be available in the quantities that might be required to control transmission in the general community. Provisional Death Counts for Coronavirus Disease 2019 (COVID-19) Provisional death counts deliver the most complete and accurate picture of lives lost to COVID-19.

Provisional Death Counts for Coronavirus Disease 2019 (COVID-19)

They are based on death certificates, which are the most reliable source of data and contain information not available anywhere else, including comorbid conditions, race and ethnicity, and place of death. Source of Beijing’s big new COVID-19 outbreak is still a mystery. Science's COVID-19 reporting is supported by the Pulitzer Center.

Source of Beijing’s big new COVID-19 outbreak is still a mystery

Beijing's confirmation of a COVID-19 case on 11 June ended a run of 55 days without reported local transmission. Since then, the outbreak has burgeoned and the city has responded with fierce determination to rein it in. As of today, it has tested 356,000 people, confirming 137 cases, according to a news report by Xinhua, the state-owned news agency.

The city has locked down some residential compounds, closed all schools, and canceled hundreds of flights. Virtually all of the infections have been linked to a massive wholesale food market that has been temporarily shuttered. Related. Most COVID cases don’t spread virus—it’s the superspreaders we need to stop. Much about how the new coronavirus spreads from one victim to the next remains a maddening mystery.

Most COVID cases don’t spread virus—it’s the superspreaders we need to stop

But amid all the frantic efforts to understand transmission, there is one finding that appears consistent: that it is inconsistent. Some people—most, even—don’t spread the virus to anyone in the course of their infection. Others infect dozens at a time. It’s a phenomenon that looked, at first, like anomalous anecdotes—a large outbreak from a Washington choir practice, a South Korean megachurch, a wedding in Jordan—but it has become a fixed feature of the new coronavirus, SARS-CoV-2. And researchers have started to settle on numbers for it. Lab-Made? SARS-CoV-2 Genealogy Through the Lens of Gain-of-Function Research. If you hear anyone claim “we know the virus didn’t come from a lab”, don’t buy it — it may well have.

Labs around the globe have been creating synthetic viruses like CoV2 for years. And no, its genome would not necessarily contain hallmarks of human manipulation: modern genetic engineering tools permit cutting and pasting genomic fragments without leaving a trace. It can be done quickly, too: it took a Swiss team less than a month to create a synthetic clone of CoV2. Oh, come on. Asymptomatic spread of coronavirus is 'very rare,' WHO says. World Health Organization officials on Tuesday walked back the comments below that were made on Monday after drawing criticism from epidemiologists across the world. Dr. Maria Van Kerkhove, head of the WHO’s emerging diseases and zoonosis unit, said Tuesday that asymptomatic spread is a “really complex question” and much is still unknown. “We don’t actually have that answer yet,” she said. Tracing 'patient zero': why America's first coronavirus death may for ever go unmarked.

The US is nearing the bleak milestone of 100,000 confirmed coronavirus deaths. But in all likelihood, the nation’s coronavirus death toll actually hit the figure days before. And despite scientists’ best efforts, that date will forever go unmarked. What Americans Need to Understand About the Swedish Coronavirus Experiment. Where The Latest COVID-19 Models Think We're Headed — And Why They Disagree. Models predicting the potential spread of the COVID-19 pandemic have become a fixture of American life. Yet each model tells a different story about the devastation to come, making it hard to know which one is “right.”

But COVID-19 models aren’t made to be unquestioned oracles. They’re not trying to tell us one precise future, but rather the range of possibilities given the facts on the ground. What 4 historical global pandemics can teach us about Covid-19. The course of human history has been shaped by infectious diseases, and the current crisis certainly won’t be the last time. However, we can capitalize on the knowledge gained from past experiences, and reflect on how we’re better off this time around. Coronavirus: When Will Your State Reopen? Here's The Data Being Used To Decide. How does coronavirus kill? Clinicians trace a ferocious rampage through the body, from brain to toes. Autopsies upend America’s coronavirus timeline — it was here a lot earlier than you think. Coronavirus cases in Asia: Hong Kong, Taiwan, and Singapore’s second wave.

Right now, if you fly to Hong Kong, you’ll have to turn over your saliva. 5 Million Cases Worldwide, 650,000 Deaths Annually: The Seasonal Flu Virus is a "Serious Concern", But the Wuhan Coronavirus Grabs the Headlines. First published on January 27, 2020. Figures quoted for the coranavirus pertain to late January. The Math Behind Social Distancing. How Will the Coronavirus End? Doctors in China Treated COVID-19 With Antivirals Not Approved in the U.S. Coronavirus survives on surfaces for days, but what does that really mean?

Coronavirus and Fecal Matter. Ricardo D. Why Nobody Knows How Many Americans Have the Coronavirus. How Iran Became a Global Vector of Infection for COVID-19. Del Norte student has COVID-19; DOH announces 14 new cases. Coronavirus origins: Genome analysis suggests two viruses may have combined. Why the Covid-19 coronavirus is worse than the flu, in one chart. Coronavirus cases have dropped sharply in South Korea. What’s the secret to its success? The Bacterial Apocalypse Is Coming. 10 misconceptions about the 1918 flu, the 'greatest pandemic in history'

Flattening the Coronavirus Curve Is Not Enough. Why are there so few coronavirus cases in Russia and Africa? Coronavirus Dashboard. How Iran Became a New Epicenter of the Coronavirus Outbreak. Community Acquired Infection - an overview. Medscape: Medscape Access. Thread by @JeremyKonyndyk: Now seems highly likely that there has been undetected community transmission ongoing in parts of the upper West Coast for weeks, at least.…

There’s a high likelihood that community spread of coronavirus has been going on for weeks: Outbreak expert. Gunnison, Colorado: the town that dodged the 1918 Spanish flu pandemic. Physician reveals to MSNBC’s Morning Joe why you’re likely to get the coronavirus. NPR Choice page. Nick Kristof: How Coronavirus Is Disrupting International Supply Chains.

Coronavirus Pandemic Worst-Case Scenario Is Ugly, Experts Say. How do bats live with so many viruses? - Attention to the Unseen. How to stop a zombie apocalypse – with science. Basic reproduction number. Wuhan seafood market may not be source of novel virus spreading globally. What is the coronavirus and how worried should we be? Coronavirus's ability to spread getting stronger, China suggests. US coronavirus patient zero is being treated by ROBOT in bio-containment room. China reports more than 200 infections with new coronavirus from Wuhan. Novel human virus? Pneumonia cases linked to seafood market in China stir concern. Furry, cute and drooling herpes: what to do with Florida's invasive monkeys? Airplane sewage may be helping antibiotic-resistant microbes spread.

Drug-resistant microbes kill about 35,000 people in the U.S. per year. In China two people got the plague. Why is it still a thing? The looming threat of C-diff. Pig 'ebola' virus sends shock waves through global food chain. Typhus and Tuberculosis Are Spreading in Homeless Populations. Mom Posts ‘Angry As Hell’ Rant After Her 15-Day-Old Son Gets Exposed To Measles Due To Anti-Vaxxers. An ancient strain of plague may have led to the decline of Neolithic Europeans. A mysterious ‘polio-like illness’ has spread to 22 US states — leaving children paralyzed. Bill Gates revealed a scary simulation that shows how a deadly flu could kill more than 30 million people within 6 months. Beware 'Disease X': the mystery killer keeping scientists awake at night.

Salon. Will H7N9 Flu Go Pandemic? There's Good News and Bad News. Deadly plague epidemic rages in Madagascar. The Illuminating Geometry of Viruses. Brain-Infecting 'Rat Lungworm' Spreads in Florida. 9 Terrifying Parasites. A Brain-Invading Parasite Is Believed to Be Spreading Because of Climate Change. MAP: Find Out What New Viruses Are Emerging In Your Backyard : Goats and Soda. The Black Plague Came To Norway In The Creepiest Way Possible. Theconversation. DNA confirms cause of 1665 London's Great Plague. How we discovered infectious diseases in 2,000-year-old faeces from the Silk Road.

First U.S. Case Of Sexually Transmitted Zika Confirmed In Texas. Escherichia coli O26 Infections Linked to Chipotle Mexican Grill Restaurants. Antibiotic under threat, as new superbug emerges in China. Scientists can now discover global epidemics before they start. Research to prevent future pandemics. Bacterial DNA from the Black Death found in teeth. Mosquito Magnet clears an acre. The Black Death bacteria continues to kill. On gloves, rubber and the spatio-temporal logics of global health. Firestone Did What Governments Have Not: Stopped Ebola In Its Tracks : Goats and Soda. Ebola Deaths Top 4,000; Screening Begins At New York's JFK Airport. Hunting the Nightmare Bacteria. Ebola - MoBS. This Is How The Ebola Epidemic Might Spread If It's Not Contained.

What happens when an amoeba “eats” your brain.