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New vaccine shows protection against melioidosis — Level A2 — an animal cell with blue dots on it

New vaccine shows protection against melioidosisCEFR A2

22 Dec 2025

Level A2 – High beginner / Elementary
2 min
90 words

A new vaccine may prevent melioidosis, a disease caused by bacteria in soil and groundwater. The bacteria can cause life-threatening pneumonia or sepsis, so finding a vaccine is important.

Researchers at a university tested the vaccine in animals. The vaccinated animals showed no lung damage, and the vaccine worked against bacteria in the air, the most dangerous form.

Scientists hope to move to human trials. The bacteria live in parts of Southeast Asia and northern Australia and have recently been found in some coastal areas of the United States.

Difficult words

  • melioidosisA serious infection from a soil bacterium
  • vaccineA medicine that teaches the body to fight
  • vaccinateTo give medicine that prevents an infection
    vaccinated
  • bacteriumA very small living organism that can infect
    bacteria
  • pneumoniaA serious lung infection that causes breathing problems
  • sepsisA dangerous body reaction to a severe infection
  • groundwaterWater that is under the ground in soil

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Discussion questions

  • Why is a vaccine important for a disease that causes pneumonia or sepsis?
  • Would you feel safe if scientists start human trials for this vaccine? Why or why not?

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