Covid-19, or Coronavirus, is impacting businesses and cities across the country in an unprecedented way. Many companies are suddenly faced with temporarily shutting down operations, or at the very least, making changes to working hours and allowing employees to work from home. You may also find it necessary to update protocols to ensure the safety of your staff and patrons, and it’s important that each person affected by these changes receive the message as soon as possible.
The second example lets the caller know that there will be a delayed response time. This keeps the caller from thinking you're negligent in returning his or her call.

Hello, you have reached the reception of Dr. X please leave your name, reason for calling, and your number so I can call you back as soon as I can. If you are experiencing a medical emergency please hang up and dial 911.
Whether you’re out for the day or are off for the week, the first rule of an out of office voicemail greeting is: let callers know when you’ll be back! You’ll save them the frustration of continuing to call and yourself the hassle of listening to redundant voicemails. It’s also a good idea to set the expectation of whether you are answering messages while you’re away, and who they can reach for assistance in your absence.