Can I Use a Face Shield Instead of a Mask?

Health officials don’t recommend the clear plastic barriers as a substitute for masks because of the lack of research. (Reuters)
Health officials don’t recommend the clear plastic barriers as a substitute for masks because of the lack of research. (Reuters)
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Can I Use a Face Shield Instead of a Mask?

Health officials don’t recommend the clear plastic barriers as a substitute for masks because of the lack of research. (Reuters)
Health officials don’t recommend the clear plastic barriers as a substitute for masks because of the lack of research. (Reuters)

Can I use a face shield instead of a mask?

No. Health officials don’t recommend the clear plastic barriers as a substitute for masks because of the lack of research on whether they keep an infected person from spreading viral droplets to others.

However, those who want extra protection may want to wear a face shield in addition to a mask.

Face shields have the added benefit of protecting your eyes and discouraging you from touching your face by acting as a physical barrier, says Christopher Sulmonte, project administrator of the biocontainment unit at Johns Hopkins Hospital, according to The Associated Press.

Meanwhile, the available research so far indicates that the best face shields for preventing viral spread are hooded or wrap around the sides and bottom of the face, according to the US Centers for Disease Control and Prevention. That’s because those shields leave less space for droplets from sneezing, coughing and talking to escape.

If you do wear a reusable face shield in addition to a mask, the CDC notes the importance of cleaning it after each use. The agency also says you should wash your hands before and after taking it off, and avoid touching your face while removing it.



Record Heat in China Strains Power Grid, Stirs Health Fears 

A woman covers herself from the sun as she browses a smartphone on a street during a hot day in Beijing, Wednesday, July 23, 2025. (AP)
A woman covers herself from the sun as she browses a smartphone on a street during a hot day in Beijing, Wednesday, July 23, 2025. (AP)
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Record Heat in China Strains Power Grid, Stirs Health Fears 

A woman covers herself from the sun as she browses a smartphone on a street during a hot day in Beijing, Wednesday, July 23, 2025. (AP)
A woman covers herself from the sun as she browses a smartphone on a street during a hot day in Beijing, Wednesday, July 23, 2025. (AP)

China warned on Wednesday against the risk of power supply disruptions as people struggled to keep cool in record heat baking large swathes of the country, which also spurred warnings to the elderly to guard against heat stroke.

Power supply suffers while demand surges, exceeding 1.5 billion kilowatts for the first time last week, energy officials said, in a third new record for China this month, when its first nationwide alert on heat-related health risks also went out.

"High-temperature weather will ... have an impact on power generation and supply," weather official Chen Hui told a press conference on Wednesday, adding that it would hit hydropower output and reduce the efficiency of photovoltaic generation.

Authorities will send alerts to notify electricity suppliers if tactics such as peak-shaving and cross-regional dispatching of power are called for, added Chen, an official of the China Meteorological Administration.

Since mid-March, the number of days when temperatures hit 35 degrees Celsius (95 degrees Fahrenheit) or more is the highest on record, said Jia Xiaolong, deputy director of the National Climate Center.

Authorities asked the elderly to stay indoors unless necessary, while urging outdoor workers to scale down activity on such "sauna days".

Temperatures have hit new highs since mid-March in the central provinces of Henan and Hubei, Shandong in the east, Sichuan in the southwest, and northwestern Shaanxi and Xinjiang, pushing the national average to the second highest on record.

During the last two weeks, 152 national weather observatories tracked temperatures above 40 degrees C (104 F) with one in Xinjiang reaching 48.7 degrees C (119.7 F), Jia said.

He did not rule out the chance of more record-breaking heat, saying August could prove as warm as, or even hotter than, in recent years.