Matthew Thomas is a Pediatric Infectious Disease specialist and an Infectious Disease provider in St Petersburg, Florida. His top area of expertise is Micrognathia.

Dr. Camelo is an infectious disease specialist at Johns Hopkins All Children’s Hospital. She sees patients on the hospital’s campus in St. Petersburg, Florida. She joined the medical staff in 2025. She was previously an attending physician in the Pediatric Infectious Diseases Department at Augusta University and WellStar/Children’s Hospital of Georgia. Dr. Camelo earned her medical degree from Military University Nueva Granada School of Medicine in Bogota DC, Colombia. She completed her residency in pediatrics at Vermont Children’s Hospital/ University of Vermont Larner College of Medicine in Burlington, and completed a fellowship in pediatric infectious diseases at Boston Medical Center/Boston Children’s Hospital and Boston University School of Medicine. She also earned a Master of Public Health from the University of Vermont School of Public Health in Burlington. Her top areas of expertise are Chagas Disease, Pneumonia, Pneumococcal Meningitis, and Urinary Tract Infection in Children.

Dr. Ruiz Holgado specializes in pediatric infectious disease at Johns Hopkins All Children’s. She joined the hospital staff in 2025. She earned her medical degree from Universidad Nacional de Tucuman in Argentina. She completed a pediatric residency at Flushing Hospital Medical Center in Flushing, New York, where she served as pediatric chief resident. She then completed a fellowship in pediatric infectious diseases at NYU Langone Health/Bellevue Hospital in New York. Dr. Ruiz Holgado’s research interests include advancing care for transplant recipients and immunocompromised hosts, with a particular interest in the intersection of tropical medicine and global health to address the needs of diverse and underserved patient populations. She speaks English and Spanish. Her top area of expertise is Osteomyelitis in Children.

Dr. Messina is the chief of the Division of Infectious Disease at Johns Hopkins All Children's Hospital. She joined the pediatric infectious disease program in 2006. She became chief of the medical staff in January 2024. A graduate of Vanderbilt University School of Medicine, she completed her pediatric residency at University of Texas-Southwestern Medical Center/Children's Medical Center, Dallas, followed by a pediatric infectious diseases fellowship at UT/Southwestern Medical Center. She was a staff pediatrician at Children's Medical Center Dallas. In the Johns Hopkins Medicine Clinical Awards, Dr. Messina was named Johns Hopkins All Children’s Hospital physician of the year in 2019 and led a COVID-19 Analytic Response Team that received the Armstrong Award for Excellence in Quality and Safety in 2022. Dr. Messina is a fellow of the American Academy of Pediatrics. She is a member of the Pediatric Infectious Disease Society, the American Society for Microbiology and the Infectious Disease Society of America. Dr. Messina serves as a reviewer for the Pediatric Infectious Disease Journal. Recent News Articles and Media Coverage The Right Vaccine Dose for Kids at the Right Age, Bay News 9 (November 4, 2021) Doctors push for children to get vaccinated before the holidays, WFLA -TV (November 10, 2021) 5 tips for parents as omicron spreads and pediatric hospitalizations rise, ABC News (December 30, 2021) CDC Shortens Isolation Period to Five Days for Asymptomatic Cases, CNN (December 28, 2021) When Can Children Get the COVID-19 Vaccine? Pediatricians Explain What to Expect, Prevention (January 4, 2022) Most Americans — and 75% of children — have gotten COVID, says CDC, Tampa Bay Times (April 28, 2022) Doctors on why Florida’s youngest kids should get COVID vaccine, Tampa Bay Times (June 27, 2022) Got questions about COVID vaccines for babies and toddlers? Here’s the answers, Tampa Bay Times (June 20, 2022) Local health officials monitor rise in RSV cases among children, WTVT - TV (November 8, 2022) Health officials alarmed over rise in RSV cases, St. Pete Catalyst (November 10, 2022) Tampa Bay area doctors give advice on back to school as summer winds down, WFTS -TV (July 27, 2022) Flu admissions spike at Tampa Bay hospitals, Tampa Bay Times (November 24, 2022) How Worried Should We Be About RSV?, Sarasota Magazine (November 10, 2022). Her top areas of expertise are Methicillin-Resistant Staphylococcus Aureus (MRSA) and Infantile Neutropenia.

Jack Hutto is a Pediatric Infectious Disease provider in St Petersburg, Florida.

David Berman is a Pediatric Infectious Disease provider in St Petersburg, Florida. Dr. Berman is currently accepting new patients.

Dr. Dumois is a Pediatric Infectious Diseases physician at Johns Hopkins All Children's Hospital. He joined the Hospital in 1993. He helps treat children with a variety of infectious diseases and is the director of our International Adoption Clinic. He is also a Collaborative Professor in the Department of Pediatrics at the University of South Florida Morsani College of Medicine. Dr. Dumois received his medical degree from the University of South Florida College of Medicine and completed his pediatric residency at All Children's Hospital/USF, serving as chief resident. He completed his fellowship in pediatric infectious disease at Children's National Medical Center, Washington, D.C., in a joint program with the National Institutes of Health. He was awarded the Johns Hopkins All Children’s Hospital Physician of the Year Clinical Award in 2016. Dr. Dumois plays an active role in continuing medical education, chairing the Planning Committee for the annual Florida Suncoast Pediatric Conference and weekly Pediatric Grand Rounds. Dr. Dumois is fellow of the American Academy of Pediatrics. He has received the USF Pediatric Attending Teacher of the Year Award and has been included in Best Doctors in America for more than a decade. Recent News Articles and Media Coverage Yes, you can get COVID twice + more Omicron questions answered, Tampa Bay Parenting Magazine (January 3, 2022) Flu season’s almost over, but Tampa Bay kids keep getting sick, Tampa Bay Times (May 21, 2022) FDOH shows flu cases on the rise in Tampa Bay region, WTSP -TV (May 24, 2022) Unseasonal surge in flu cases leaves many Tampa Bay kids sick, WTVT – TV (May 25, 2022) Tampa Bay area doctors concerned about early flu season, rise in RSV among children, WTVT – TV (October 17, 2022) Children's Hospital says respiratory virus cases in young children are climbing, WFTS -TV (October 24, 2022) Tampa Bay area sees significant rise in RSV cases, WTVT – TV (October 24, 2022) Health experts warn of 'tripledemic' this winter, WTSP -TV (October 28, 2022) Tampa family shares experience with son's case of RSV, WFTS -TV (November 3, 2022) COVID-19 hospitalizations in babies on the rise, WTVT – TV (November 10, 2022) November cases up 359% over last year at Johns Hopkins All Children's in St. Pete, WTVT – TV (November 14, 2022) A Florida Man Died Of A Brain-Eating Amoeba And Residents Are Being Warned To Use Caution With Tap Water, Buzzfeed News (March 3, 2023) Drug for protecting babies against RSV approved, WTVT – TV (July 17, 2023).

Dr. Lujan-Zilbermann is a physician in the infectious disease program at Johns Hopkins All Children’s Hospital. He joined the medical staff in 2019 and primarily sees patients on the main campus in St. Petersburg. He earned his medical degree from Universidad Francisco Marroquín in Guatemala City, Guatemala. He completed an internship and residency in pediatrics at Schneider Children’s Hospital of Long Island Jewish Medical Center/Albert Einstein College of Medicine, where he also served as chief resident. He then completed a fellowship in the departments of infectious diseases and virology-molecular biology at St. Jude Children’s Research Hospital and Le Bonheur Children’s Medical Center in Memphis, Tennessee. His clinical and research interests include cytomegalovirus, influenza, immunizations and pediatric/adolescent HIV infections.

Shirley Jankelevich is a Pediatric Infectious Disease provider in St Petersburg, Florida.