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Strict hygiene practices are followed in the care of newborns, whereas hygiene practices in the care of older babies are less emphasised - HSC - SSCE Biology - Question 20 - 2015 - Paper 1
Question 20
Strict hygiene practices are followed in the care of newborns, whereas hygiene practices in the care of older babies are less emphasised. Which of the following is ... show full transcript
Worked Solution & Example Answer:Strict hygiene practices are followed in the care of newborns, whereas hygiene practices in the care of older babies are less emphasised - HSC - SSCE Biology - Question 20 - 2015 - Paper 1
Step 1
Which of the following is the best reason for this difference?
Answer
The best reason for the differences in hygiene practices between newborns and older babies is option (D): Early exposure to pathogens helps to build a strong immune system.
Newborns have underdeveloped immune systems and are more susceptible to infections, necessitating strict hygiene measures to protect them. In contrast, older babies have had some opportunities for immune system development often through initial exposures to pathogens, making them more resilient.
This gradual exposure is essential as it primes the immune system, helping in its maturation and response to infections later in life.