SAN ANTONIO -- The San Antonio Metropolitan Health District said Friday there are now a total of 33 individuals under investigation for possible infection. Metro Health also said seven additional individuals’ test results came back negative from the Centers for Disease Control and Prevention.

There are reportedly still three confirmed Zika cases.

Metro Health said the delay in test responses from CDC is a common occurrence throughout the nation, given that one laboratory is processing all samples from across the country. The CDC also recently expanded its case guidelines, creating a higher number of samples to test.

Metro Health released the following Zika summary:

  • 3 confirmed cases
  • 33 pending investigation
  • 7 test result were negative

In accordance with CDC guidelines, Metro Health said gender or pregnancy status will not be released along with case information and updates in order to protect the privacy of these individuals.

The three individuals with confirmed cases acquired the infection while traveling abroad, acording to Metro Health.

For people who get sick, the illness is usually mild. For this reason, Metro Health said many people might not realize they have been infected. Common symptoms include fever, rash, joint pain, or red eyes. Symptoms typically begin 2 to 7 days after being bitten by an infected mosquito.

Due to a possible link between infection during pregnancy and microcephaly in the infant, pregnant women are strongly advised to delay travel to Zika-affected areas. If travel is unavoidable, Metro Health recommends they should take extra precautions to prevent mosquito bites. Metro Health said to see your healthcare provider if you are pregnant and have traveled to a Zika-affected area within the last 12 weeks.

Additionally, pregnant women and women who are considering becoming pregnant who have a sex partner living in or traveling to Zika-affected areas should:

  • abstain from sex (vaginal, anal, or oral)
  • or use condoms correctly and consistently for the duration of the pregnancy
  • Men who traveled to a Zika-affected area also should:
  • abstain from sex
  • or use condoms correctly and consistently for three months after their return

With no treatment or vaccine available, Metro Health said the only protection against Zika is to avoid travel to Zika-affected areas.

If you do travel to a country where Zika is present, the CDC advises strict adherence to mosquito protection measures:

  • Use air conditioning or window/door screens
  • Use mosquito repellant on skin and clothing, even during the day
  • Wear long-sleeved shirts and long pants
  • Empty standing water from outdoor containers (even small containers)

See your healthcare provider if you develop a fever, rash, joint pain, or red eyes within two weeks after traveling. Be sure to tell your health care provider where you traveled.