Dengue virus is a flavivirus transmitted by Aedes mosquitoes and is an important cause of illness worldwide. Data on the severity of travel-associated dengue illness are limited.

Acute diverticulitis, which refers to inflammation or infection, or both, of a colonic diverticulum, is a common medical condition that may occur repeatedly in some persons. It most often manifests with left-sided abdominal pain, which may be associated with low-grade fever and other gastrointestinal symptoms. Complications may include abscess, fistula formation, perforation, and bowel obstruction. The American College of Physicians recently published practice guidelines on the diagnosis and management of acute diverticulitis, the role of colonoscopy after resolution, and interventions to prevent recurrence of this condition. Among the recommendations were the use of abdominal computed tomography (CT) scanning in cases where there was diagnostic uncertainty, initial management of uncomplicated cases in the outpatient setting without antibiotics, referral for colonoscopy after an initial episode if not performed recently, and discussion of elective surgery to prevent recurrent disease in patients with complicated diverticulitis or frequent episodes of uncomplicated disease. Here, 2 gastroenterologists with expertise in acute diverticulitis debate CT scanning for diagnosis, antibiotics for treatment, colonoscopy to screen for underlying malignancy, and elective surgery to prevent recurrent disease.

Dyslipidemia is an important risk factor for coronary artery disease and stroke. All persons with dyslipidemia should be advised to focus on lifestyle interventions, including regular aerobic exercise, a healthy diet, maintenance of a healthy weight, and abstinence from smoking. In addition to lifestyle interventions, lipid-lowering therapy should be considered for persons at moderate to high risk for atherosclerotic cardiovascular disease based on validated risk equations. Statin therapy is the first-line medical treatment for dyslipidemia due to its effectiveness and favorable adverse effect profile, but newer treatments provide additional tools for clinicians to effectively treat dyslipidemia.

Falsey AR, Williams K, Gymnopoulou E, et al; CYPRESS Investigators. Efficacy and safety of an Ad26.RSV.preF-RSV preF protein vaccine in older adults. N Engl J Med. 2023;388:609-620. 36791161.

Cochrane A, Chen C, Stephen J, et al. Antithrombotic treatment after stroke due to intracerebral haemorrhage. Cochrane Database Syst Rev. 2023;1:CD012144. 36700520.

Paton NI, Cousins C, Suresh C, et al; TRUNCATE-TB Trial Team. Treatment strategy for rifampin-susceptible tuberculosis. N Engl J Med. 2023;388:873-887. 36808186.

Sorajja P, Whisenant B, Hamid N, et al; TRILUMINATE Pivotal Investigators. Transcatheter repair for patients with tricuspid regurgitation. N Engl J Med. 4 Mar 2023. [Epub ahead of print]. 36876753.

Papi A, Ison MG, Langley JM, et al; AReSVi-006 Study Group. Respiratory syncytial virus prefusion F protein vaccine in older adults. N Engl J Med. 2023;388:595-608. 36791160.

Swen JJ, van der Wouden CH, Manson LE, et al; Ubiquitous Pharmacogenetics Consortium. A 12-gene pharmacogenetic panel to prevent adverse drug reactions: an open-label, multicentre, controlled, cluster-randomised crossover implementation study. Lancet. 2023;401:347-356. 36739136.

Gragnano F, Mehran R, Branca M; Single Versus Dual Antiplatelet Therapy (Sidney-2) Collaboration. P2Y12 inhibitor monotherapy or dual antiplatelet therapy after complex percutaneous coronary interventions. J Am Coll Cardiol. 2023;81:537-552. 36754514.

Sarraj A, Hassan AE, Abraham MG, et al; SELECT2 Investigators. Trial of endovascular thrombectomy for large ischemic strokes. N Engl J Med. 2023;388:1259-1271. 36762865.

Hoeper MM, Badesch DB, Ghofrani HA, et al; STELLAR Trial Investigators. Phase 3 trial of sotatercept for treatment of pulmonary arterial hypertension. N Engl J Med. 2023;388:1478-1490. 36877098.

Azizi M, Saxena M, Wang Y, et al; RADIANCE II Investigators and Collaborators. Endovascular ultrasound renal denervation to treat hypertension: the RADIANCE II randomized clinical trial. JAMA. 2023;329:651-661. 36853250.

There is uncertainty about which diagnostic strategy for detecting coronary artery disease (CAD) provides better outcomes.

In trials, hospital walking programs have been shown to improve functional ability after discharge, but little evidence exists about their effectiveness under routine practice conditions.

Information about the effectiveness of oral antivirals in preventing short- and long-term COVID-19-related outcomes in the setting of Omicron variant transmission and COVID-19 vaccination is limited.

Taggart C, Monterrubio-Gómez K, Roos A, et al. Improving risk stratification for patients with type 2 myocardial infarction. J Am Coll Cardiol. 2023;81:156-168. 36631210.

Gene therapy is a potential cure for sickle cell disease (SCD). Conventional cost-effectiveness analysis (CEA) does not capture the effects of treatments on disparities in SCD, but distributional CEA (DCEA) uses equity weights to incorporate these considerations.

The United States has 2 types of degree programs that educate physicians: allopathic and osteopathic medical schools.

Osteoarthritis is a major contributor to pain and disability worldwide. Given that inflammation plays an important role in the development of osteoarthritis, anti-inflammatory drugs may slow disease progression.