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enseignants",{"title":57,"url":58},{"title":60,"url":61},{"title":192,"group":48,"menu":193},"Produit",[194,195,196,197,198,199,200],{"title":38,"url":7},{"title":68,"url":69},{"title":71,"url":72},{"title":74,"url":75},{"title":77,"url":78},{"title":15,"url":80},{"title":201,"url":10},"Tarification",{"title":203,"group":48,"menu":204},"Mentions légales",[205,206,207,208,209],{"title":203,"url":87},{"title":89,"url":90},{"title":92,"url":93},{"title":95,"url":96},{"title":98,"url":99},{"title":211,"group":48,"menu":212},"Service client",[213,214,215],{"title":104,"url":105},{"title":107,"url":108},{"title":110,"url":111},{"content":217,"related":303,"meta":382,"internal":393},{"title":218,"leadIn":219,"category":220,"elements":223,"becomeAnExpert":253,"author":292,"readDuration":301,"readDurationFormatted":302},"Stages of HIV: from acute infection to advanced HIV disease","The stages of HIV aren’t always clinically obvious. Review how symptoms, viral load, and CD4 count change over time—and why early recognition matters for diagnosis, treatment, and transmission risk.",{"id":221,"name":222},1,"Course previews",[224,235,240,248],{"type":225,"data":226},"video",{"readDurationInSeconds":227,"video":228},350,{"platform":229,"name":230,"url":231,"size":232},"YouTube","HIV Staging for Clinicians: Acute, Chronic, Advanced HIV Disease | HIV Viral Load and CD4 Count","https:\u002F\u002Fyoutu.be\u002FF-Z-_BcA4yk",{"width":233,"height":234},200,113,{"type":236,"data":237},"free_text",{"readDurationInSeconds":238,"text":239},30.4,"\u003Cp>HIV does not always present in a clinically obvious way. Symptoms, viral load, and CD4 count can change substantially across the stages of HIV, helping clinicians recognize acute infection, identify advanced HIV disease, and anticipate what comes next. Understanding the stages of HIV can help you interpret diagnostic tests more accurately, make timely diagnoses, and develop effective management strategies. \u003Cbr>\u003Cbr>In this lesson from our \u003Ca href=\"https:\u002F\u002Fwww.medmastery.com\u002Fcourses\u002Fhiv-in-primary-care\">HIV in Primary Care\u003C\u002Fa> course, you'll learn how to:\u003C\u002Fp>\u003Cul>\u003Cli data-list-item-id=\"e5a1aeb93b6f76dbe3d0c9fe487b34699\">Distinguish acute HIV, chronic HIV, and advanced HIV disease in clinical practice\u003C\u002Fli>\u003Cli data-list-item-id=\"e78ee5a32882b6b2036dc350b2236fb4a\">Recognize acute HIV infection, even when symptoms are nonspecific or absent\u003C\u002Fli>\u003Cli data-list-item-id=\"ea33df5ee85e7e3ac4770154e2fa8a512\">Interpret how viral load and CD4 count change over time\u003C\u002Fli>\u003Cli data-list-item-id=\"edb439793b152095a85b6e22b9669efd3\">Explain why early antiretroviral therapy (ART) matters \u003C\u002Fli>\u003Cli data-list-item-id=\"eb47c38f61f1d7286d6e2adf1e717856d\">Identify advanced HIV disease using AIDS-defining illnesses and CD4 count\u003C\u002Fli>\u003C\u002Ful>",{"type":241,"data":242},"cta",{"readDurationInSeconds":243,"text":244,"buttonText":245,"buttonUrl":246,"teachIllustration":247},3.7333333333333334,"Start the first chapter of our HIV in Primary Care course for free","Start chapter 1 now","https:\u002F\u002Fwww.medmastery.com\u002Fuser\u002Fregister?target=%2Fcourses%2Fhiv-in-primary-care","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002Fa1825034-e70f-418a-92d5-292de5c45c56",{"type":236,"data":249},{"readDurationInSeconds":250,"title":251,"text":252},165.33333333333334,"Transcript","\u003Ch3 dir=\"ltr\" id=\"docs-internal-guid-7103fef2-7fff-7807-d229-dbcacccc236b\">\u003Cspan>Reviewing the stages of HIV\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[0:00]\u003C\u002Fspan>\u003Cbr>\u003Cspan>In this Medmastery lesson, we will review the different stages of HIV, including acute HIV, chronic HIV, and advanced HIV, or AIDS. Understanding these stages will help you accurately interpret diagnostic tests, make timely diagnoses, and develop effective management strategies.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>Clinical stages of HIV in practice\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[0:22]\u003C\u002Fspan>\u003Cbr>\u003Cspan>The Fiebig system is commonly used for staging HIV in research and academic settings. However, in clinical practice, a more practical approach is to categorize HIV into three stages: acute HIV, chronic HIV, and acquired immunodeficiency syndrome, or AIDS. This classification makes a clear framework for diagnosis, management, and patient counseling.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>Recognizing acute HIV symptoms\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[0:50]\u003C\u002Fspan>\u003Cbr>\u003Cspan>Acute HIV can manifest in different forms, ranging from completely asymptomatic to presenting as a mild flu-like illness resembling mononucleosis, or as a severe systemic condition requiring hospitalization. Given the variable presentation, it's important to have a high clinical suspicion for HIV, especially in the high-risk populations or patients with no documented screening history.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>HIV viral load and CD4 count over time\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[1:19]\u003C\u002Fspan>\u003Cbr>\u003Cspan>Here's a graph that shows what's happening in the body during the different stages of HIV infection. On the left y-axis, we have CD4 lymphocyte counts, which reflect immune function. On the right y-axis, we see HIV RNA copies representing the amount of virus in the blood. And across the bottom, the x-axis tracks time, starting with weeks after infection and extending into years. \u003C\u002Fspan>\u003Cbr>\u003Cspan>Acute HIV represents a critical window of extremely high viral replication and immune system damage. As noted on the graph, viral load spikes and CD4 count quickly drops during this stage.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>Starting antiretroviral therapy during acute infection\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[2:07]\u003C\u002Fspan>\u003Cbr>\u003Cspan>Identifying patients and starting ART during acute HIV infection is critical. Early treatment curbs the rapid rise in viral load, reduces symptoms and helps preserve CD4 cells from early immune damage. Beyond improving long-term health for the patient, it also carries a major public health benefit. By lowering HIV RNA levels, early ART significantly reduces the risk of transmission.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>Chronic HIV infection and immune system damage\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[2:38]\u003C\u002Fspan>\u003Cbr>\u003Cspan>After the body's initial response to HIV, most patients enter a prolonged phase known as chronic HIV. During this stage, viral replication and immune system damage occur at a slower rate. Most patients remain asymptomatic until their immune function declines sufficiently to allow for opportunistic infections or other advanced HIV illnesses. The duration of this phase varies based on multiple patient-specific factors, including baseline viral load and CD4 count following acute HIV infection. This underscores the importance of routine HIV screening, so patients can be diagnosed and started on treatment before significant immune damage occurs.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>Explaining HIV versus AIDS to patients\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[3:27]\u003C\u002Fspan>\u003Cbr>\u003Cspan>A common question patients ask is, “I have HIV, does this mean I have AIDS?” The answer is no, not automatically. AIDS is a term that can sometimes be confusing and carry stigma. For standardization purposes, we'll still use the term AIDS in this course, but it's increasingly being replaced with terms like advanced HIV disease, which is clearer and less stigmatizing.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>AIDS-defining illness and advanced HIV disease\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[3:53]\u003C\u002Fspan>\u003Cbr>\u003Cspan>There are two ways we can identify AIDS or advanced HIV disease. The first is when patients develop certain opportunistic infections or cancers that occur because the immune system is severely weakened. These are known as AIDS-defining illnesses. In people with healthy immunity, these conditions are uncommon or much less severe. We'll look at the most important of these illnesses in more detail in the upcoming lessons.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>Defining advanced HIV disease by CD4 count\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[4:22]\u003C\u002Fspan>\u003Cbr>\u003Cspan>The second way AIDS, or advanced HIV disease, is defined is by a CD4 count below 200. This threshold reflects severe immune suppression. As a reminder, CD4 cells, also known as T helper cells, are white blood cells that direct immune responses. HIV progressively depletes CD4 cells, weakening the immune system over time. A higher CD4 count indicates a stronger immune system, while a lower CD4 count increases infection vulnerability.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>Treating advanced immunosuppression in HIV\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[4:58]\u003C\u002Fspan>\u003Cbr>\u003Cspan>While treatment is important at every stage of HIV, it becomes especially critical once a patient reaches this stage of advanced immunosuppression. At this point, care focuses not only on reducing the viral load and restoring immune function, but also on providing prophylaxis against opportunistic infections that occur at lower CD4 counts. Taken together, these interventions dramatically reduce mortality and improve long-term outcomes.\u003C\u002Fspan>\u003C\u002Fp>",{"courses":254,"showAwardsBelow":48},[255,275],{"id":256,"isFreeCmeCourse":257,"title":258,"type":259,"specialization":260,"teachers":262,"cmeCredits":264,"teacherIllustration":265,"backgroundImage":266,"relativeUrl":267,"lastChanged":268,"created":269,"description":270,"relativeURL":267,"meta":271},4460,false,"Viral Hepatitis Lab Essentials","course",[261],"Infectious diseases",[263],"Anna Wonnerth, MD",2.5,"https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F99f55ea5-7391-411d-b4d3-e308e5741b8f","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F99f55ea6-7bb8-445a-b0cd-e247366d1ce6","\u002Fcourses\u002Fviral-hepatitis-lab-essentials","1779194421","1518554185","Lab investigations are crucial for diagnosing viral hepatic infections, but they can be tricky to interpret. In this course, we will cover the pathophysiology, lab markers, and clinical presentation of hepatitis A, B, C, D, and E. You’ll learn how to interpret the lab reports to diagnose different types of viral hepatic infections and how to distinguish between past infections and vaccinations.",{"duration":272,"quizzes":273,"lessons":274},4492,6,27,{"id":276,"isFreeCmeCourse":257,"title":277,"type":259,"specialization":278,"teachers":279,"cmeCredits":281,"teacherIllustration":282,"backgroundImage":283,"relativeUrl":284,"lastChanged":285,"created":286,"description":287,"relativeURL":284,"meta":288},6227,"Infectious Disease Essentials",[261],[280],"John F. Fisher, MD MACP FIDSA",4,"https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F99f55ee0-5ed5-48d3-b452-1bcd47dfacf4","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F99f55ee1-2b09-4606-9d99-42ec696992f3","\u002Fcourses\u002Finfectious-disease-essentials","1779279232","1558283407","Manage common infections with confidence in this course. You’ll cover viral, bacterial, fungal, and parasitic disease processes, plus learn a systematic approach to differentiating between and treating various life-threatening infections as well as less serious cases. Learn to determine whether urgent empirical therapy is needed or if it is safe to pursue an exact diagnosis before treating.",{"duration":289,"quizzes":290,"lessons":291},10854,7,48,{"id":293,"name":294,"image":295,"profession":296,"relativeUrl":299,"specializations":300},14049,"Dakota Price, MD","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002Fa1671381-d4a7-4c22-a65a-0659507c43b5",{"name":297,"description":298},"Family Medicine Physician","\u003Cp id=\"docs-internal-guid-5debd379-7fff-178d-2b21-88341ad0eb39\" style=\"line-height:1.2;margin-top:3pt;margin-bottom:0pt;\" dir=\"ltr\">\nFamily Medicine Faculty Physician at the Cahaba+UAB Family Medicine Residency, and Clinical Director of HIV Care at Cahaba Medical Care. Project Director for the National AETC HIV Training and Resources (HTR) Program.\n\n\u003C\u002Fp>","\u002Fteachers\u002Fdakota-price-md",[261],210,"4m",[304,331,357],{"id":305,"title":306,"text":307,"image":308,"author":316,"path":325,"readDuration":326,"readDurationFormatted":327,"internal":328},1355,"Discover how pediatric ECG goes beyond the 12-lead ECG","Learn where three additional leads are placed for a pediatric ECG and how they help assess cardiac position, electrical activity, and congenital cardiac variants.",{"alt":309,"title":310,"size":311,"location":313},"Infant undergoing ECG lead placement while a clinician prepares for pediatric ECG","",{"width":312,"height":312},600,{"bucket":314,"key":315},"public-drupal-medmastery-assets-production","\u002F2026-06\u002FC144(1)_magazine image.png",{"id":317,"title":318,"relativeURL":319,"image":320,"professionLong":321,"profession":322,"weight":324},14047,"Peter F. Aziz, MD FHRS","\u002Fteachers\u002Fpeter-f-aziz-md-fhrs","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9ef4d18d-7b35-4843-a39a-5e3495d544df","\u003Cspan id=\"docs-internal-guid-bb2fbf38-7fff-c33a-a26a-a82f9d2d9c4a\">Pediatric Electrophysiologist, Professor of Pediatrics, and founder and director of the Inherited Arrhythmia Clinic.\u003C\u002Fspan>",{"name":323},"Pediatric Electrophysiologist",0,"\u002Fmagazine\u002F15-lead-pediatric-ecg",160,"3m",{"created":329,"updated":330,"published":330},1781900013,1781901055,{"id":332,"title":333,"text":334,"image":335,"author":342,"path":351,"readDuration":352,"readDurationFormatted":327,"internal":353},1354,"Evaluating bleeding & abdominal pain in early pregnancy","Learn how to evaluate a patient presenting with vaginal bleeding and abdominal pain in early pregnancy when ectopic pregnancy is a concern.",{"alt":336,"title":310,"size":337,"location":340},"Medical illustration of an ectopic pregnancy implanted in the fallopian tube outside the uterus",{"width":338,"height":339},1201,1200,{"bucket":314,"key":341},"\u002F2026-06\u002FC144(2)_magazine image.png",{"id":343,"title":344,"relativeURL":345,"image":346,"professionLong":347,"profession":348,"weight":350},12787,"Tori O’Daniel, MD FACOG","\u002Fteachers\u002Ftori-odaniel-md-facog","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9c43cf00-58e5-4b12-9d94-ce4fcf5697fc","Tori is a lead obstetrician (OB) hospitalist and Medical Director of OB Hospitalists and Women’s Services at Mercy Hospital, Oklahoma City.",{"name":349},"Lead obstetrician hospitalist",5312,"\u002Fmagazine\u002Fabdominal-pain-in-early-pregnancy",172,{"created":354,"updated":355,"published":356},1780855964,1780858467,1780858468,{"id":358,"title":359,"text":360,"image":361,"author":367,"path":376,"readDuration":234,"readDurationFormatted":377,"internal":378},1353,"Gestational age ultrasound in early pregnancy evaluation","Learn how to obtain the correct ultrasound views and accurately measure crown-rump length and biparietal diameter to estimate gestational age.",{"alt":362,"title":310,"size":363,"location":365},"Gestational age ultrasound image demonstrating crown-rump length measurement in the first trimester",{"width":364,"height":364},900,{"bucket":314,"key":366},"\u002F2026-05\u002FC144(1)_magazine image.png",{"id":368,"title":369,"relativeURL":370,"image":371,"professionLong":372,"profession":373,"weight":375},2976,"Viveta Lobo, MD","\u002Fteachers\u002Fviveta-lobo-md","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9c43cefc-7f09-4a9a-9865-4aeea3cef318","\u003Cspan id=\"docs-internal-guid-57fc7959-7fff-8d74-e680-4d8102bdd254\">Associate Professor, Department of Emergency Medicine at Stanford University Medical Center in California, USA.\u003C\u002Fspan>",{"name":374},"Emergency medicine physician",507,"\u002Fmagazine\u002Fgestational-age-ultrasound","2m",{"created":379,"updated":380,"published":381},1780168728,1780322380,1780169720,{"seo":383,"og":386},{"title":384,"description":385},"Stages of HIV: Understanding Clinical Progression | Medmastery","See how the stages of HIV reflect changes in symptoms, viral load, and CD4 count over time—and how these patterns guide timely clinical care.",{"title":384,"description":385,"image":387},{"alt":388,"title":310,"size":389,"location":391},"Clinician explains a graph depicting the stages of HIV, showing changes in HIV viral load and CD4 count over time",{"width":339,"height":390},630,{"bucket":314,"key":392},"\u002F2026-06\u002FC147(1)_Open graph_1200x630.png",{"id":394,"created":395,"updated":396,"published":397},1357,1782344685,1782345545,1782345546]