1/ Q: Can I go back to my indoor #fitness classes? 🚴‍♀️

A: The #NerdyGirls LOVE your efforts to stay fit 💪, but best to hang on to those online or outdoor workouts a bit longer.

TL;DR: Heavy breathing, no masks, and indoors is the perfect recipe for #SARSCoV2 #transmission.
2/ A recent U.S. @CDCgov report described an #outbreak linked to an unnamed fitness facility in #Chicago in which *55 out of 81* attendees of an indoor high-intensity fitness class in Chicago were infected over the course of a week in August 2020.
3/ ❓What precautions were being taken?

➡️ The classes were at <25% capacity, with masks 😷, temperature & symptom checks required at entry. 🤒 Exercise mats were spaced 6 feet/2 meters apart. ↔️
4/ ➡️ Mask use was NOT required during exercise.
The outbreak investigation involved a fair amount of nerdy detail & detective work, which you can read in full in the report, linked below. cdc.gov/mmwr/volumes/7…
5/ ✨HIGHLIGHTS:

➡️ Two attendees reported the earliest symptom onset & each attended five classes during that week while symptomatic (🙈YES, WE KNOW…).
6/ ➡️Twenty-two (40%) of attendees with #COVID19 attended an exercise class on or after the date of symptom onset, including three (5%) who attended on the same day or after they received the positive test result.
7/ ➡️Overall, 43 (78%) attendees with #COVID19 attended an exercise class during their estimated infectious periods.
Infrequent rather than consistent mask use during class was reported more commonly among attendees with #COVID than among those who did not have #COVID.
8/ A second @CDCgov report described 3 different outbreaks in fitness facilities in #Hawaii. In one, an instructor taught an indoor spinning class around 4 hours before his symptom onset. cdc.gov/mmwr/volumes/7…
9/ 🚲 Bikes were all 6 feet/2 meters apart, but no one wore masks, doors & windows were closed, and the instructor was placed in front of the participants “shouting instructions & encouragement.”
10/ 💥ALL TEN of the class participants tested positive for #SARSCoV2 within the next several days.

⬇BOTTOM LINE:

➡️ 6 feet apart is not enough in enclosed spaces while exercising. ↔️
11/ ➡️ Unmasked activities indoors increase risk of transmission, especially with heavy breathing/shouting & poor ventilation. 😷

➡️ FOR THE LOVE, PLEASE follow guidance for self-isolation & quarantine if you have been exposed or have #symptoms of #COVID19.
12/ ➡️ Exercising OUTDOORS, even with others, is MUCH safer given the rapid dilution of aerosols in outdoor air. 🏞

We APPLAUD all of you making an effort to keep moving during the pandemic. 👏
13/ #Vaccination is quickly pulling forward the day we can all get sweaty together again indoors, but until then try to enjoy the outdoors (yay Spring!), and/or keep up with the bounty of on-line workouts the pandemic has provided along with the #TigerKing & #Bridgerton .

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More from @DearPandemic

3 Mar
1/ Q: Does the COVID vaccine only last 90 days?!

A: No. There is really no reason to think that protection from the #vaccines wears off after 90 days. We know the vaccines last longer than 90 days. But we don’t know how long. Image
2/ The @CDCgov recently updated their #guidance about quarantining after an exposure & included some changes for people who have been vaccinated.
3/ They said that if you have a known exposure to someone who has #COVID & you completed your #vaccination series at least 2 weeks ago *but less than 90 days ago*, you do not need to quarantine.
cdc.gov/vaccines/covid…
Read 10 tweets
25 Feb
1/ Q: Any news yet about whether vaccines prevent asymptomatic infection?

A: YES! We are getting a steady trail of clues hinting that the #vaccines DO IN FACT REDUCE INFECTIONS!
2/ The #clinicaltrials for the various #vaccines did not study whether they prevented asymptomatic infection or transmission. That’s because vaccines are thought of as medicine--something that operates at the individual level, not the pandemic-management level.
3/ So, the vaccine trials measured whether, compared to people who didn't get the vaccine, the people who were vaccinated had reduced risk for the worst of the bad clinical outcomes from COVID:
➡️ symptomatic COVID-19
➡️ hospitalization
➡️ and/or death.
Read 10 tweets
17 Feb
1/ Q: This pandemic winter is dragging on … and on. I need a safe #happiness boost. Right now.

A: We feel you! Here are four research-based tips to plant the seeds of change🌱even as many of us are still buried under the (literal and figurative) snow. ❄️ ⛄️
2/ 😊 Say no more often 😊

You might call it the “yes, sure… oh, dang” problem. Academics call it hyperbolic discounting. It’s the challenge we all have where we agree to things that are in the future because we discount it – we think it’s less valuable than the present.
3/ Our to-do list for today is in front of us & we know we don’t have time to add an extra, unimportant thing, but April? Yes, sure, my April is wide open rn. And then April comes &… oh dang, I’m overwhelmed. Give your future self the gift of saying no. bit.ly/3py5Wjs
Read 11 tweets
17 Feb
1/ Q: Is COVID-19 99% survivable?

A: Yes- BUT those odds are not as good as they sound. 🎲

Ask yourself- would you let your family board a plane if 1 out of 100 passengers were going to be thrown out of the plane mid-flight? ✈️ Image
2/ The Nerdy Girls are in the business of statistics & public health, so we *totally get* & *applaud* 👏 the desire to put risks in context. In 2019 there were roughly 36,000 automobile deaths in the U.S., each one a tragedy for a family....
3/ And yet, we do not generally recommend not driving to reduce this risk.

We DO create rules of the road & invest in new technologies to make driving as safe as possible, which has more than halved the automobile fatality rate from 1970s to today. 🚗
Read 16 tweets
15 Feb
1/ Q: What can I do to support a #caregiver?

A: Caregivers need a back-up plan, a much deserved #recharge, and financial support.
2/ Caregiving during the #COVID pandemic has been further strained by disrupted child care, social isolation, unemployment, and a contagious & debilitating virus. If the caregivers fall, so does everything else.
3/ Caregivers come in many forms & are the backbone of daily life for millions of Americans. To anyone in a #caregiving role: WE. SEE. YOU. ❤️

The days are long, the worries are real, & the options in the era of #COVID19 are limited.
Read 14 tweets
11 Feb
1/ Q: What’s up with the new @CDCgov #mask study?

A: Good news, #doublemasking or tightening up ear loops works!
2/ Remember the key features of effective masking: #FILTERING & #FIT.

The @CDCgov released a new experimental study testing ways to improve mask fit for cloth & medical masks to reduce leakage around the edges. cdc.gov/mmwr/volumes/7…
3/ Using mannequin “headforms” & simulated #coughing they tested:

1️⃣ #Cloth #mask over a medical mask (double masking)
2️⃣ #Medical #mask with knotted ear loops & tucked in sides
Read 9 tweets

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