HARRISBURG — The state is poised to test a contact-tracing app that was downloaded by one-fifth of Ireland in 36 hours.

A state Health Department official said Wednesday that the app might undergo a pilot project in Pennsylvania that could go live in the coming weeks as part of an effort to more quickly contain coronavirus outbreaks by notifying people who may have been exposed.

The state Department of Health otherwise has said little about its plans for the app, other than it is seeking to introduce a mobile app and enter a $1.9 million contract with software developer NearForm Ltd of Ireland to deploy and maintain it.

At a hearing organized by state House Democrats, Lindsey Mauldin, a special assistant to state Health Secretary Dr. Rachel Levine, said department personnel are working with researchers from the University of Pennsylvania, Harvard and the Massachusetts Institute of Technology to figure out how to use the app in Pennsylvania.

Pennsylvania is also working with Delaware, and surrounding states could join, Mauldin told lawmakers.

“We’re working on a pilot now and working on testing the app. We’re hoping to have it live, I believe, by the end of August,” Mauldin said.

The app is based on smartphone technology developed by Apple and Google. A number of states are interested in using the Apple-Google technology for an app, but none has introduced one yet.

It is designed to automatically notify people if they might have been exposed to the coronavirus. It relies on Bluetooth wireless technology to detect when someone who downloaded the app has spent time near another app user who later tests positive for the virus.

The identity of app users will be protected by encryption and anonymous identifier beacons that change frequently, the companies have said.

Several states have rolled out apps using other approaches, such as satellite-based GPS location tracking, but there’s little evidence they have been successful. One of the first to launch, in Utah, has since disabled locating-tracking features.

In Pennsylvania, getting an app into operation is of the utmost importance before schools reopen for the fall semester, the Department of Health said in its contract proposal.

Its selection process for an app includes a requirement where the developer should have already been thoroughly tested in other states or jurisdictions.

A contract with NearForm isn’t signed, the department said.

But NearForm’s app is already operational in Ireland, where its COVID Tracker app had more than 1 million downloads — about 20% of the population of Ireland and over a quarter of its smartphone users — within 36 hours of the July 7 launch, according to NearForm.

The app has won some praise in Europe. UK-based newspaper the Guardian described the Irish app as “a shiny success,” contrasting it to floundering efforts to roll out an app in Britain. The newspaper said the Irish app was the fastest-downloaded per capita in Europe and has started picking up cases of infection.

NearForm’s app also meets the functionality and privacy criteria deemed necessary by Apple, Google and agencies in Gov. Tom Wolf’s administration, the Department of Health wrote in the contract proposal.

Apps from other developers collected location data, geo-tagged individual phones or asked for microphone access to determine and validate proximity between phones, the department said.

Pa. driver’s license grace period extended

Continuing concern about the virus prompted a new grace period for Pennsylvania drivers with expiring licenses.

The state Department of Transportation extended the expiration dates for driver licenses, identification cards and learner’s permits to Aug. 31. The grace period applies to cards that expired after March 16.

It had been scheduled to expire this Friday.

Mercer County

adds 5 new cases

The state Department of Health reported five new COVID-19 cases Wednesday in Mercer County, bringing the total to 308, with 268 confirmed cases and 40 probables. There have been nine fatalities, the most recent on July 19, in the county since the pandemic began, according to the state.

Mercer County has had 6,946 negative tests.

As of Wednesday, Sharon had the county’s highest number of cases, with 44, followed by Mercer with 43, according to the state’s ZIP code listing. The list of areas in the county with more than 20 cases are: Farrell, 35; Hermitage, 33; and Grove City, 28.

State cases

pass 110,000 mark

The state Department of Health on Wednesday reported 834 additional confirmed virus cases and 16 new deaths.

The virus has infected more than 110,000 people in Pennsylvania since the beginning of the pandemic. More than 7,160 have died, most of them in nursing homes.

In July, Pennsylvania’s 14-day rate of new cases per 100,000 residents has risen by more than 70%, from below 60 to almost 100.

The seven-day positivity rate — based on the Health Department’s daily public disclosures of the number of people who are newly confirmed to be positive and the number of people who tested negative — has gradually increased in July, from about 4.5% to 6%.

Deaths have declined from June to July, although hospitalizations are on the rise in July, according to state data.

In Allegheny County, Pennsylvania’s epicenter of July’s rising case numbers, positivity rates have declined from as high as 12% to 7% or 8%, the county’s health department director, Dr. Debra Bogen, said Wednesday.

Contact tracing statistics released by the county shows an explosion in cases among bar employees and patrons.

In the third week of June, just one person contacted by contact tracers mentioned being an employee or patron of a bar or restaurant. In the fourth week, the number was 89 and then 221 in the week ending July 4.

Those numbers declined to 127 in the week ending July 18 after a cascade of restrictions on bars and restaurants, but it remains the leading activity reported by people testing positive, Bogen said.

The county is also seeing rising numbers of people testing positive who reported attending parties, religious services, funerals and weddings, going to gyms or working in retail, the county reported.