PUBH 6004 FINAL EXAM 2023

PUBH 6004 FINAL EXAM 2023 "The dose makes the poison" - Correct Answers- A substance's toxicity depends on not only its chemical identity, but also on its quantity - "All substances are poison and nothing is without poison, only the dose permits something to not be poisonous"" 2 different types of respirators - Correct Answers"- Air purifying respirators - Supplied air respirators" 4 major intervention areas to reduce burden of WASH-related disease - Correct Answers"- Point-of-use water treatment (treating at household level, twice as effective as treat-at-source treatment - Safe storage of water - Handwashing with soap - Sanitation (even just basic, low cost systems)" Acceptable cancer risk? - Correct Answers- EPA usually aims for cancer risk estimates below 1 in 1mil for lifetime exposure actuarial risks - Correct Answers- based on experience with the same risk - predictions made with great deal of precision - diseases, auto accidents, etc. acute toxicity - Correct Answers-sudden onset of toxic effect (hours or days), usually from single dose, often reversible - acute does not mean severe Acute toxicity - Correct Answersadverse effects that occur within a short period after exposure to a toxicant; often reversible, usually from a single dose Administrative control strategy - Correct Answers"procedures to reduce opportunity for exposure (have to rely on compliance) (i.e., putting a time limit on how long you can work in the presence of a chemical, around a loud noise, etc.)"