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Infection and Spread

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A few weeks ago, everyone was talking about the “peak” of the epidemic. Now, not so much. Places are reopening and it feels like everything is going back to normal. Does this mean we’re past the peak?

Infection and Spread

A: A lot of modelers stopped talking about the peak of the epidemic as our thinking about how to do good longer-term outbreak control matured. It also became more and more clear to those of us who study epidemics that at least in some places, we are not able to zip up social distancing enough Read more…

I gotta go! And a public bathroom is the only option. How do I stay safe?

Infection and Spread Staying Safe Travel

A(short): Public bathrooms aren’t exactly paragons of cleanliness and sanitization even in the best of times, and pose additional public health challenges during the pandemic. But you can reduce your risk by WASHING THE HECK OUT OF YOUR HANDS, wearing a mask, and avoiding touching surfaces as much as possible. And please don’t be scared, Read more…

What activities can we do safely and which are better to avoid this summer?

Families/Kids Infection and Spread Reopening Socializing Staying Safe

A: With some modifications, there are opportunities to have some fun this summer. Promise. Risk happens on a continuum with all events outside your home carrying some level of risk. Some activities carry higher risks than others. It’s best to choose lower risk activities to limit transmission of the virus within your community and beyond. Read more…

I keep seeing headlines reporting that CDC changed their guidelines regarding whether SARS-CoV-2 is transmitted via touching contaminated surfaces, is that true?

Infection and Spread

A: As highlighted in this NPR article, after CDC recently re-arranged some content on their website, there was confusion over whether contact with surfaces contaminated with the virus was still considered a possible mode of transmission. CDC has since provided an update clarifying that while person-to-person transmission via droplets continues to be considered the predominant way Read more…

Our neighborhood pool plans to reopen in a couple of weeks when our state eases lockdowns. Is the pool a risky place for COVID-19 transmission?

Families/Kids Infection and Spread Reopening Staying Safe

A: You’re unlikely to get COVID-19 *from* the pool, but you could certainly be exposed *at* the pool. To clarify: Pool water is heavily chlorinated, and COVID-19 is not waterborne in any case. So, being immersed in the pool or otherwise exposed to pool water is not risky in and of itself. The problem, of Read more…

Can people get re-infected with SARS-CoV-2?

Infection and Spread

A: Prior reports of individuals testing positive again after recovering from COVID-19 raised concerns that individuals were being re-infected with SARS-CoV-2. Tests used to determine if someone has COVID-19, detect presence of the virus’s genetic material, but do not indicate whether a person is actively shedding virus capable of infecting cells-an indicator of active infection. Read more…

What’s my personal risk for a bad COVID outcome should I become infected?

Clinical Symptoms Infection and Spread Staying Safe

A: A variety of “risk calculators” have been developed to help you answer this very question (Links below). BIG CAVEAT: There are huge margins of error on the results, often making the risk scores MORE PRECISE THAN ACCURATE. Background: As much of the country continues to move through re-opening phases, we as individuals are having Read more…

I need to know more about this virus. With all this talk about church choirs being risky events, does this imply that the virus is spread through the air?

Clinical Symptoms Infection and Spread

A: We still believe that the virus is transmitted primarily through droplets. But, here’s the truth: there is a very fine line between droplet and airborne transmission. Airborne: Transmitted by tiny droplets that remain suspended in the air. Can travel distances. (Hypothesized for SARS and MERS) Droplet: Transmitted by larger droplets that fall to the Read more…

I’m still confused about the difference between an INCUBATION period and an INFECTIOUS period.

Infection and Spread

Coronavirus 101 explainer, please!!! A: We empathize – there are so many terms to learn. For us, too! It’s literally impossible to be an expert on every dimension of the pandemic). This timeline courtesy of the Johns Hopkins School of Public Health helpfully visualizes the two concepts, along with how they link up chronologically. Here Read more…

Does UV light kill the virus? Should I buy one of these UV sanitizing devices I keep seeing in my social media ads?

Infection and Spread Staying Safe

A: Certain types of UV light *might* be able to help sanitize surfaces and air, but it’s still early days. Important: UV light CANNOT kill the virus if the virus is already inside of the body. Further, it’s not currently deemed safe to use so-called “UV sanitizers” on the body, because of damage to the Read more…

Should I be worried about my child spreading COVID-19 and/or getting strange and serious COVID-19 symptoms?

Clinical Symptoms Data and Metrics Families/Kids Infection and Spread

A: If we look at the data to date (we can’t know about data that we don’t have!), children are much less likely to get COVID-19 than adults after exposure. The data also tell us that it is likely that fewer children are infected in the community than adults and that they are less likely Read more…

Should I just get it over with and go to a ‘COVID party’?

Biology/Immunity Infection and Spread Staying Safe

A: For the love of peanut butter and jelly, please NO, 1000 X NO! “Health officials in a county in southern Washington state say a rise in coronavirus cases is linked to “COVID-19 parties.” NBC News Link “Walla Walla County health officials are receiving reports of COVID-19 parties occurring in our community, where noninfected people Read more…

What actually is herd immunity anyway?

Biology/Immunity Infection and Spread

A: The term “herd immunity,” also sometimes called community immunity, refers to a situation where a lot of people in a population are not susceptible to a virus–either because they have already had it and are unlikely to get it again, or because they’ve been vaccinated. That is to say, their immune systems have been Read more…

What does the future hold?

Infection and Spread

Q: What’s going to happen after the current outbreak subsides? Will there be another one? How widespread will it be? A: We wish we knew for sure, but top epidemiologists envision a few possible scenarios. “While these scenarios diverge on key details — how much transmission will decrease over the summer, for instance, and how Read more…