Mapping CDC’s new guidelines: High transmission areas where you need to wear a mask indoors

Written by on July 29, 2021

In a renewed effort to restrict the unfold of COVID-19, the Facilities for Illness Management and Prevention is recommending that absolutely vaccinated People put on masks indoors in the event that they’re in an space of considerable or excessive coronavirus transmission.

The CDC is additionally recommending common indoor masking for all academics, employees, college students and guests inside faculties from kindergarten to 12th grade, no matter vaccination standing. 

The up to date steerage comes as a wave of circumstances triggered by the extremely contagious delta variant sweeps the nation.

For the primary time in additional than three months, circumstances are averaging greater than 60,000 a day, in line with a USA TODAY evaluation of Johns Hopkins College knowledge. There are greater than 2,000 deaths per week.

“The delta variant is exhibiting daily its willingness to outsmart us and to be an opportunist in areas the place we’ve not proven a fortified response to it,” CDC Director Dr. Rochelle Walensky stated in a briefing Tuesday. “COVID-19 continues to current many challenges and has exacted an amazing toll on our nation.”

CDC recommends masks for vaccinated folks:  What does excessive transmissibility imply?

Map of COVID-19 transmission ranges by county

Two developments prompted the brand new CDC advice:

  • Extra areas inside the U.S. exhibiting excessive neighborhood transmission charges of COVID-19 – in different phrases, areas with coronavirus an infection charges larger than common.
  • New science exhibiting absolutely vaccinated folks contaminated by the delta variant after vaccination can transmit the virus.

Group transmission charges are primarily based on two measurements taken over a rolling seven-day common.

The primary is diagnostic primarily based, utilizing nucleic acid amplification checks (NAATs) that present constructive outcomes for the virus. NAATs are thought of the “gold normal” for detection of COVID-19.

The second is the variety of new circumstances per 100,000 folks. If the 2 indicators counsel completely different transmission ranges, the upper stage is chosen. 

Counties or different areas are separated into 4 neighborhood transmission classes: low, average, substantial or excessive. Here is how they’re calculated:

Here is how the rankings break down total by county:

The delta variant is extra contagious than different coronavirus variants:

  • It has an incubation interval of 4 days, making it extra contagious than the unique model, which has a six-day incubation interval.
  • These contaminated with delta infect a median of six folks, in contrast with the four-person an infection fee of the unique model.
  • Delta has brought about a minimum of 92% of latest infections within the U.S.

Although the delta variant will not be extra deadly than the unique virus, extra folks could die as a result of extra persons are contaminated.

Be taught extra: Why extra transmissible variants of COVID-19 might be as worrisome as extra lethal ones

SOURCE USA TODAY Community reporting and analysis; Facilities for Illness Management and Prevention; Kaiser Well being Information; Related Press; nature.com

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3:40 pm UTC Jul. 29, 2021

Up to date
4:18 pm UTC Jul. 29, 2021


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