Health officials in Texas have confirmed four new cases of coronavirus in the state, bringing the total number of infections to five.

The Texas Department of State Health Services (DSHS) announced on Thursday that all new cases of COVID-19 were reported in Harris County, which is also home to busy Houston.

In a statement shared with Fox News, the health authorities identified the persons as Harris County residents who recently traveled aboard.

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The Houston Chronicle reported that the people are all in their 60s and visited Egypt in February, where they may have been exposed to the viral disease.

As for the collective group, the Chronicle reports that “the five people contracted the virus independently of each other and developed respiratory symptoms after returning to Texas.”

Moving forward, public health officials are at work in identifying the patients’ close contacts for possible isolation, monitoring and testing if they appear symptomatic.

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The DSHS, Texas Division of Emergency Management and other state agencies are coordinating efforts in the preventative fight against the spread of the coronavirus, the DSHS said. Currently, COVID-19’s immediate risk to most Texans is low.

More information about the ongoing outbreak is available at the DSHS' website.