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Streptococcus bacteria can cause a sore throat or skin infection - Edexcel - GCSE Biology - Question 5 - 2018 - Paper 1
Question 5
Streptococcus bacteria can cause a sore throat or skin infection. An illness called scarlet fever can also develop during an infection with this bacterium. (a) Giv... show full transcript
Worked Solution & Example Answer:Streptococcus bacteria can cause a sore throat or skin infection - Edexcel - GCSE Biology - Question 5 - 2018 - Paper 1
Step 1
Give two precautions a doctor should take when treating a patient who is infected with Streptococcus.
Answer
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Wash hands after contact: Doctors should ensure proper hygiene by thoroughly washing their hands after any interaction with patients infected with Streptococcus to prevent the spread of bacteria.
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Wear protective clothing: This includes wearing gloves and masks to avoid direct contact with infected bodily fluids, thus ensuring both the doctor's safety and reducing the risk of further infection.
Step 2
Calculate the percentage increase of the number of cases of scarlet fever between the periods September 2014 to March 2015 and September 2013 to March 2014.
Answer
To calculate the percentage increase in cases of scarlet fever:
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Determine the initial and final values:
- Initial cases (September 2013 to March 2014): 2830
- Final cases (September 2014 to March 2015): 5943
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Use the formula for percentage increase: ext{Percentage Increase} = rac{ ext{Final Value} - ext{Initial Value}}{ ext{Initial Value}} imes 100 Substituting the values: ext{Percentage Increase} = rac{5943 - 2830}{2830} imes 100 = rac{3113}{2830} imes 100