One way to use a prologue is to provide backstory on a character or several characters. This can help you, as the writer, avoid using other tricks like flashbacks or inserted backstory in the novel. This option is useful if you are struggling to cover the details of a character's past within the action of your novel. However, many writers argue against using a prologue as a way to dump a whole bunch of backstory, or past information, on the reader. Instead, the backstory in the prologue should feel essential to the rest of the novel and contain information that could not be placed anywhere else in the novel. A backstory heavy prologue should reveal the origin of the quest or mission in the novel and provide the reader with information about the past that leads up to the present action in the novel. This could be the history behind an event, like a war or a conflict, that is touched on in the novel or the history of a character who is important to the novel. Many writers use a prologue as a hook that intrigues the reader. This type of prologue should raise compelling questions in the reader's mind. It should give the reader a reason to turn the page and set up the reader with questions and/or images that will be addressed in the novel. A hook prologue could present a scene that introduces character and action that become very important in the novel. It could also foreshadow what is going to happen and allow your reader to briefly meet one of your characters or several of your characters. Some writers will use a prologue as a framing device, where a character is motivated to sit down and write the novel. The character in the prologue will then serve as the narrator for the novel. This method can be effective if your novel is voice driven and dominated by one narrator or one to two narrators. Writers will use prologues this way if they feel they need to let the reader know why the story is being told. Sometimes, a prologue is used to introduce a character's point of view only once. The rest of the novel may be told from another point of view or several other point of views, and never focus again on the character in the prologue. This option is usually only done out of necessity or for a compelling reason, as you want the character's perspective to contribute to the novel as a while or reinforce themes or ideas present in the novel. This type of prologue gives you the opportunity to use a point of view that is not used much or at all in the rest of the novel. It also prevents you from violating your POV later in the novel, as you have already addressed the one character's point of view in your prologue.
++++++++++
One-sentence summary -- Use the prologue to provide backstory. Have the prologue hook the reader into the rest of the novel. Use the prologue as a way to frame the rest of the novel. Focus on a different character perspective in the prologue.

Tell your doctor that you're having symptoms and ask if you need to come in for an exam. Your doctor may recommend you stay home and rest. However, they could ask you to come in for lab testing to confirm a possible COVID-19 infection. Follow your doctor's instructions so you can recover and are less likely to spread the infection. Keep in mind that there's no medication for COVID-19, so your doctor can't prescribe you a treatment. Your doctor may do a nasal swab of your mucus or a blood test to check for an infection. This will help them rule out other infections and possibly confirm COVID-19. Allow the doctor to take a nasal swab or blood draw so they can make a proper diagnosis. Getting a nasal swab or blood draw shouldn't hurt, but you may experience some discomfort. A serious COVID-19 infection can cause complications such as pneumonia. If you're having trouble breathing, go to your doctor, an urgent care center, or an emergency room immediately. If you're alone, call for help so you arrive safely. Breathing problems could be a sign that you're having complications, and your doctor can help you get the help you need to recover.
++++++++++
One-sentence summary --
Call your doctor if you suspect you have COVID-19. Undergo a lab test for COVID-19 if your doctor recommends it. Get emergency medical treatment if you have difficulty breathing.