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HealthHealth NewsHealth Care



CDC APPEARS AT ODDS WITH OWN EXPERT ADVISORY COMMITTEE OVER MASKS FOR HEALTH
CARE WORKERS

Studies and scientific evidence had shown that there was ‘no difference among
HCP wearing N95 respirators and those wearing surgical mask.’

(FranciscoMarques/Shutterstock)
By Katabella Roberts
2/7/2024
Updated:
2/19/2024

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The Centers for Disease Control and Prevention (CDC) has asked its expert
advisers to include more recommendations on mask-wearing in guidance for health
care workers despite their research suggesting they need only be worn under
certain circumstances to protect against coronavirus and common seasonal viral
respiratory infections.

Two years ago, the health agency selected a group of science experts—known as
the CDC’s Healthcare Infection Control Practices Advisory Committee—and asked
them to update its hospital infection control guidelines, which had not been
updated since 2007.

The experts have significant knowledge across an array of subjects including
infectious diseases, infection prevention and control, health care epidemiology,
nursing, clinical and environmental microbiology, health policy, health services
research, public health, and more, according to the CDC’s website.
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In June 2023, the group sent the health agency a draft document (pdf) detailing
their updated advice for controlling infections.

In it, they noted that studies and scientific evidence had shown that there was
“no difference among HCP (health care personnel) wearing N95 respirators and
those wearing surgical masks,” effectively stating there was no difference in
infection rates among health care providers who wore N95 masks versus those who
wore surgical masks in the clinic.

The group did, however, note flaws in the data, and “strong concerns with the
strength of this evidence,” including that over half of the studies they
analyzed were retrospective in nature, which raised the concern of recall bias,
or memory, potentially affecting the results. Many of the studies also did not
report on compliance and respirator fit was not assessed in a majority of the
pandemic, they said.

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Despite those flaws, the committee still concluded that health care workers need
only wear surgical masks when treating patients infected by common or endemic
viruses such as regularly occurring respiratory infections.

The committee did, however, recommend the use of N95s in cases where patients
are infected with new or emerging respiratory pathogens for which vaccines,
immunity, and effective therapies are not available.

In another set of updated draft guidance (pdf) submitted to the CDC in November,
the expert panel noted evidence suggests that masks only work for “source
control;“ effectively infected people wearing a mask to help prevent them from
infecting others.


REUSED MASKS A ‘RESERVOIR OF INFECTIOUS MATERIAL’

“Masks are indicated in any of the following situations: (1) when an activity is
anticipated to create 190 splashes or spray to the face, (2) as source control,
and (3) as indicated by Transmission-Based Precautions,” the group wrote.

The CDC defines transmission-based precautions as a second tier of infection
control.

According to the experts, the masks should also not be reused because they “can
serve as a reservoir of infectious material if they become soiled during use.”

“Masks should be changed when soiled, damaged, or harder to breathe through,”
the committee wrote. “Extended use is not practiced with masks except when used
for source control, and then disposed of when removed or after use when caring
for a patient on Transmission-Based Precautions.”

The experts concluded by noting that loose-fitting masks “may not fully contain
secretions of the wearer or efficiently filter inhaled air.”

Meanwhile, when it comes to respirators, the committee noted that, like masks,
they are to be used as indicated by transmission-based precautions.

A seal check should also be performed each time a health care worker puts on the
fit-tested respirator to ensure it is properly seated on the face, and
single-use disposable respirators should not be reused because, like masks, they
“can serve as a reservoir of infectious material if they become soiled during
use.”

“Reusable respirators must be cleaned, disinfected, and dried between uses
according to the manufacturer’s instructions for use,” the committee noted.
“Optimally, extended use is not practiced with single-use respirators except
when used for source control and then disposed of when removed or after use when
caring for a patient on Transmission-Based Precautions.”

The committee also noted the importance of limiting the amount of inhaled air
that comes from leaks around the respirator, because “leaked air is not
filtered. ”Additionally, the committee noted that filtration efficacy for
fit-tested respirators is only “expected” to be greater than that for masks.

People wearing masks walk on the street in a file photo. (Chung I Ho/The Epoch
Times)


CDC ‘ISSUES’ WITH DRAFT GUIDELINES

In a Jan. 24 blog post, the CDC thanked the expert Committee for its draft set
of framework recommendations but noted a number of “issues.”

“Another relevant to preventing transmission through air is to make sure that a
draft set of recommendations cannot be misread to suggest equivalency between
face masks and NIOSH Approved respirators, which is not scientifically correct
nor the intent of the draft language,” the CDC said.

“Although masks can provide some level of filtration, the level of filtration is
not comparable to NIOSH Approved respirators,” the health agency continued.
“Respiratory protection remains an important part of personal protective
equipment to keep healthcare personnel safe.”

The CDC also provided a list of questions and comments for HICPAC’s
consideration.

Additionally, in a letter (pdf) sent to the committee on the same date, the CDC
asked the expert advisers to include more information and suggestions regarding
health care workers wearing masks in their guidance.

A review of the draft guidance “identified several questions for which CDC would
like to request further input from the committee,” the agency said.

“We feel these questions, largely related to when masks and respirators (such as
N-95) are recommended in healthcare settings, reflect concerns or areas of
confusion that continue to be raised by stakeholders in response to the draft
guideline,” it added.

The health agency then questioned if there should be a “category of
Transmission-based Precautions that includes masks (instead of NIOSH Approved®
N95® [or higher-level] respirators) for pathogens that spread by the air.”

“Should N95 respirators be recommended for all pathogens that spread by the
air?” the agency said.

The committee’s recommendations are not final, and the CDC currently still
suggests wearing a mask or respirator when sick or caring for someone who is
sick with COVID-19.

“When caring for someone who is sick with COVID-19, a respirator will provide
you the best level of protection,” CDC guidance states.
In a Jan. 23 blog post, the health agency noted that it will eventually start
“working to expand the scope of technical backgrounds” among the committee
members and a HICPAC Isolation Guideline Workgroup.

“The expanded workgroup and the HICPAC with the newly appointed members will
review and discuss these additional considerations and guidelines at the next
HICPAC meeting, which is open to the public,” the agency concluded.

The Epoch Times has contacted the CDC for further comment.

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Top Two Comments:
time4change

2024-02-08

Masks don’t block anything except the truth.

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USAF VET

2024-02-07

Shut the CDC down…they are useless and have ZERO credibility.

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Katabella Roberts
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Katabella Roberts is a news writer for The Epoch Times, focusing primarily on
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Related Topics
CDC
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masks
Comments
Write a comment...
Top Two Comments:
time4change

2024-02-08

Masks don’t block anything except the truth.

Reply

Share

USAF VET

2024-02-07

Shut the CDC down…they are useless and have ZERO credibility.

Reply

Share



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