71.   The infection is caused by either of two strains of bacteria that replace the microbes that normally exist in the vagina.

72.   The infection is caused by group B streptococci.

73.   The infections were caused by bacteria known as Pseudomonas aeruginosa.

74.   The infection is caused by amoebas found naturally in bodies of water, but in particularly high concentrations during drought conditions.

75.   The new study did not show that epidurals cause infections or even that the risk of actual infection in the babies was increased.

76.   The process scrapes and roughens enamel, leaving crevices where bacteria can hide and cause infections.

77.   The pneumococcus also causes ear infections, and many studies show that the more a child is treated with antibiotics, the more likely resistance is to develop.

78.   The severity of the infection depends on the type of bacterium or virus that has caused the infection.

79.   The superbugs are no immediate threat to those carrying them, but could cause dangerous infections after an operation, for example.

80.   The type that causes infections can be found in municipal water, juice, rare hamburgers or elsewhere.