The announcement came on Wednesday afternoon after the number of confirmed COVID-19 cases in NSW increased to 267.

"From today [Wednesday], visitors will be restricted to one per patient at any time, and all visitors must be older than school age," a Western NSW Local Health District spokeswoman said.

In addition, all in-hospital volunteer activities have been suspended as a precautionary measure.

"The WNSWLHD regrets any inconvenience, however these changes will help minimise the chance of patients and visitors being exposed to COVID-19," the spokeswoman said.

"This is particularly important for patients who may be particularly vulnerable to COVID-19."

People are also asked to not enter a hospital if they have:

The spokeswoman said the management of COVID-19 is constantly being reviewed and new measures will be put into place in local hospitals and health services as needed.

READ MORE: Coronavirus in Western NSW, follow the live blog

"Everyone can play a role in responding to COVID-19 by following advice on social distancing and by thoroughly washing hands regularly and covering coughs and sneezes," she said.

Visit NSW Health for more information on how you can protect yourself and how authorities are responding to COVID-19.

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