Almost 150 people in Houston have tested positive for COVID-19 more, despite receiving two doses of either Moderna or Pfizer mRNA shots. The report from the Houston Health Department stated that 142 people who were fully vaccinated tested positive for the virus two weeks after having had a second shot.
Houston's Chief Medical Officer, Dr. David Persse, said "breakthrough" cases were not unexpected.
“This vaccine is not dissimilar from other vaccines in that it gives you some level of protection, but no vaccine is 100 percent effective.” Dr David Persse, Chief Medical Officer Houston
It is generally expected that within 10 to 12 days of receiving their second vaccine dose, a person will develop immunity to the COVID-19 virus.
The vaccines are not 100% effective - with both scoring above 90% efficacy rate in clinical testing. Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases (NIAID), was not surprised by these results stating that the positive cases after vaccination are “not at all incompatible with a 90-plus percent vaccine efficacy.”
The overall results are still very promising.
The U.S. Centers for Disease Control and Prevention (CDC) has said approximately 5,800 people across the United States had been infected despite being fully vaccinated against Coronavirus Disease 2019 (COVID-19). 7 % of these infected individuals required hospitalization, and sadly 74 people died.
Despite this, the overall results of the vaccines are extremely encouraging. The New England Journal of Medicine published a letter from doctors outlining the results of a recent study. The study evaluated breakthrough cases reported by the University of California, San Diego, and the University of California, Los Angeles (UCLA) Health Systems.
The rarity of positive test results 14 days after administration of the second dose of vaccine is encouraging and suggests that the efficacy of these vaccines is maintained outside the trial setting. These data underscore the critical importance of continued public health mitigation measures (masking, physical distancing, daily symptom screening, and regular testing), even in environments with a high incidence of vaccination, until herd immunity is reached at large."
More Than 7 Million Texans Fully Vaccinated
The Texas Department of State Health Services reports 7,788,050 people are now fully vaccinated against COVID-19 as of the beginning of May. More than 11 million Texans have received at least one dose. Last week there were 705 COVID cases reported per day in the Greater Houston area.
Despite a small number of vaccinated people in Houston testing positive, there should be no concerns with getting vaccinated. Any unexpected adverse side effects or results are reported to the World Health Organization to be evaluated by an independent group of experts called the Global Advisory Committee on Vaccine Safety.