The vaccine by AstraZeneca, developed in conjunction with the University of Oxford, was one of the first to be announced against COVID-19. We tell you what their possible side effects and what are the most common adverse reactions.
In various mayors of Mexico City, as well as in entities such as Campeche, AstraZeneca’s vaccine was chosen to vaccinate people between the ages of 30 and 39. This vaccine It is one of the most versatile due to its low cost and the flexible storage temperature it requires.
A dose costs three dollars (equivalent to 60 Mexican pesos) and is perfectly preserved in a refrigerator with a temperature between 2ºC and 8ºC, unlike vaccines such as Pfizer or Moderna, which have a much higher price and require more delicate care.
What are the side effects of the AstraZeneca vaccine?
Between the side effects most common of this vaccine are injection site pain, headache, and fatigue. However, these three reactions occur in less than 50% of people.
General malaise and muscle pain are also common, that afflict less than 40% of people. Symptoms like fever and chills have been reported by less than 30%.
Between the reactions Nausea and diarrhea can also occur. Few patients report symptoms such as dizziness, drowsiness, and even skin reactions. However, in the vast majority of cases, these reactions disappear within 48 hours.
Currently, there is controversy over whether this vaccine has more noticeable side effects among the very young. In an interview with the BBC, the scientist Andrew Pollard, who coordinated the clinical trials of this vaccine, admitted that age could be an important factor in terms of adverse reactions.
“The older you are, the fewer the side effects; those over 70 have almost no side effects, “he said.
However, these observations have not been confirmed by any subsequent study. In any case, doctors assure that these adverse reactions should disappear within two days. Otherwise, it would be necessary to seek medical attention. Those who present discomfort can take paracetamol.
How effective is the AstraZeneca vaccine?
The technology that uses this drug has previously been used with success in vaccines such as tuberculosis. Like the Johnson & Johnson vaccine, it consists of a vector of adenovirus that indicates to the cells the instructions to generate the antibodies that allow an optimal immune response.
Following the latest studies published in March 2021, scientists and health authorities have determined that this vaccine is effective and reliable. Grants a 79% effective against symptomatic disease and also has a 100% effectiveness against the most serious cases of COVID-19.