 Alright guys, it's day 17. 17 out of 30 of our Pants Review series. That's where I select a random note card at random from the note cards that I personally studied for, for the pants, and I passed on my first try. So these are good note cards to study from. And so what we're going to do is we're going to select a note card at random. We're going to read it, give you a few seconds to think about it, then I'll give you the answer. We're going to do this for 30 days also. 17 out of 30 days means we are well past the halfway point, which means we need to celebrate. Sip some champagne here while you think of an answer as soon as I give you the question, okay? So our 17th Pants Review question is, what are the three phases of whooping cough? What are the three phases of whooping cough? Sip some champagne for a second, let you guys think about it. Okay. The three phases of whooping cough caused by a gram negative aerobic bacteria called bordatella pertussis. The three phases of whooping cough are the catarole phase, the paroxysmal phase, and the convalescent phase. A little bit more in detail, the catarole phase is going to last the first one to two weeks of the disease and it's characterized by fever, malaise, the child is sick, they have a fever, and this is also when they are the most infectious during the catarole phase, which is the first one to two weeks when they are very tired and they have a fever. The second phase is the paroxysmal phase characterized by violence, rapid-fire coughing with the characteristic whoop. And that can last days to weeks following the catarole phase. And I guess I'll try to do an impression, so just pair with me. But the characteristic coughing, the rapid-fire coughing with the whoop is like, you know, the whoop, the whoop, the whoop, that's why it's called whooping sound or whooping cough, that's why it's such a characteristic of this disease. So anyway, first two phases, catarole phase, fever, malaise, one to two weeks, catarole phase, then paroxysmal phase, violent rapid-fire coughing with the characteristic whoop for days to weeks, and following that phase is the convalescent phase, which is characterized by the cough just slowly, gradually getting better. So once more, the three phases of whooping cough caused by bordetella pertussis are catarole phase, fever, and malaise for one to two weeks, most infectious, followed by paroxysmal phase, the rapid-fire coughing with the characteristic whoop, days to weeks, and then the convalescent phase as the cough is just gradually getting better.