Demographic Disparities in Clinical Outcomes of COVID-19: Data From a Statewide Cohort in South Carolina. Clin Microbiol Infect. 2022;6(5):294-302. doi:10.1016/s2352-4642(22)00027-x, Torjesen I. Covid-19: Omicron variant is linked to steep rise in hospital admissions of very young children. Data from December 2021 suggests that Omicrons average incubation period is around two to four days, which would mean that symptoms may develop faster after exposure compared to other variants. Current trends and geographical differences in therapeutic profile and outcomes of COVID-19 among pregnant women - a systematic review and meta-analysis. 2023 Dotdash Media, Inc. All rights reserved, Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Late Conditions Diagnosed 1-4 Months Following an Initial Coronavirus Disease 2019 (COVID-19) Encounter: A Matched-Cohort Study Using Inpatient and Outpatient Administrative Data-United States, 1 March-30 June 2020. Ogata T, Tanaka H. SARS-CoV-2 Incubation Period during the Omicron BA.5Dominant Period in Japan. We take your privacy seriously. Third, exposures from sources other than the infector of the pair might have been missed. 2020/06/01/ 2020;7(6):e438-e440. Response to additional COVID-19 vaccine doses in people who are immunocompromised: a rapid review. (3,4) Presentation Classification of Omicron (B.1.1.529): SARS-CoV-2 variant of concern. We defined the patient with the later symptom onset in each pair as the infected patient. Accessed December 3, 2021. CDC has a multifaceted surveillance system for analyzing SARS-CoV-2 variants circulating in the United States. MMWR Morb Mortal Wkly Rep. Nov 6 2020;69(44):1641-1647. doi:10.15585/mmwr.mm6944e3, Jamieson DJ, Rasmussen SA. Clin Infect Dis. Patient data during the BA.1dominant and Delta-dominant periods were obtained from previous studies (6,7). Centers for Disease Control and Prevention. Apr 2022;21(4):435-451. doi:10.1080/14760584.2022.2035222, Lee A, Wong SY, Chai LYA, et al. doi:10.1542/peds.2021-053418, Preston LE, Chevinsky JR, Kompaniyets L, et al. The rapid emergence and worldwide detection of the SARS-CoV-2 Omicron variant underscores the importance of robust genomic surveillance systems and prompt information-sharing among global public health partners. Shorter incubation time for this variant suggests the quarantine period could be reduced. Incubation periods can. Multisystem inflammatory syndrome in adults (MIS-A): case finding through systematic review of electronic medical records. May 2020;38(5):925-928. doi:10.1016/j.ajem.2019.07.020, Iuliano AD, Brunkard JM, Boehmer TK, et al. The four participating airports receive a large, diverse volume of international travelers, including direct flights from southern Africa. These recommendations, however, are only for asymptomatic and mildly ill people, and the shortening to five days means that a person should be isolated during the period when a person is most infectious.. Specific symptom information was available from 37 symptomatic persons. Apr 20 2022;doi:10.1093/cid/ciac303, Hernandez-Romieu AC, Leung S, Mbanya A, et al. MMWR Morb Mortal Wkly Rep. Jul 17 2020;69(28):923-929. doi:10.15585/mmwr.mm6928e1, Yang X, Zhang J, Chen S, et al. JAMA Pediatr. Apr 19 2021;193(16):E540-e548. Hospitalizations Associated with COVID-19 Among Children and Adolescents - COVID-NET, 14 States, March 1, 2020-August 14, 2021. This is shorter than with Delta and earlier variants. MMWR Morb Mortal Wkly Rep. Aug 5 2022;71(31):993-999. doi:10.15585/mmwr.mm7131a3, Zavala M, Ireland G, Amin-Chowdhury Z, Ramsay ME, Ladhani SN. ThermoFisher Scientific. Trends in COVID-19 Cases, Emergency Department Visits, and Hospital Admissions Among Children and Adolescents Aged 0-17 Years - United States, August 2020-August 2021. MMWR Morb Mortal Wkly Rep. Apr 30 2021;70(17):644-650. doi:10.15585/mmwr.mm7017e3, Chevinsky JR, Tao G, Lavery AM, et al. The 95th percentile distribution for incubation period among patients during the BA.5dominant period appeared shorter than that during the BA.1dominant period, although the difference was not statistically significant. CDC continues to work with state and local health departments and other public health partners to conduct case investigation and contact tracing of travelers into and within the United States with confirmed COVID-19 attributed to the Omicron variant. Each new variant may have its own variations in incubation periods. An early CDC study, released on Tuesday, examined an Omicron cluster in Nebraska and found that the time between exposure and infection - known as the incubation period - may be around three . Health Care Utilization and Clinical Characteristics of Nonhospitalized Adults in an Integrated Health Care System 28-180 Days After COVID-19 Diagnosis - Georgia, May 2020-March 2021. 3501 et seq. N Engl J Med. Omicron is the dominant variant in the United States, making up about 59 percent of infections for the week ending Dec. 25, the Centers for Disease Control and Prevention said Tuesday. The mean (+SD) incubation periods were 2.6 (+1.0) days during the BA.5dominant period, 2.9 (+1.3) days during the BA.1dominant period, and 3.7 (+1.6) days during the Delta-dominant period. MMWR Morb Mortal Wkly Rep. Sep 10 2021;70(36):1255-1260. doi:10.15585/mmwr.mm7036e2, Siegel DA, Reses HE, Cool AJ, et al. Therefore, isolating for five days may not be enough, even if one is asymptomatic, Weiss said. Under . . A preprint study published in medRxiv found that many individuals with COVID-19 remain contagious after the fifth day of illnessregardless of symptom statuswhich means including individuals on their days six to 10 of illness in work settings may increase the spread of the virus. This policy was intended to reduce overall travel volume from the region where Omicron was first identified to delay the introduction and spread of Omicron while U.S. public health measures were enhanced. Corresponding author: Cria G. Perrine, hgk3@cdc.gov. Acute and Persistent Symptoms in Children With Polymerase Chain Reaction (PCR)-Confirmed Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Infection Compared With Test-Negative Children in England: Active, Prospective, National Surveillance. Incubation period is defined as the interval from earliest possible exposure of household contacts to the index patient until symptom onset. (8) Multiple publications have reported cases of people with abnormalities on chest imaging that are consistent with COVID-19 very early in the course of illness, even before the onset of symptoms or a positive COVID-19 test. Reducing travel-related SARS-CoV-2 transmission with layered mitigation measures: symptom monitoring, quarantine, and testing. Acute covid-19 and multisystem inflammatory syndrome in children. Centers for Disease Control and Prevention. According to the CDC, the incubation period for COVID is between two and 14 days, though the newest guidance from the agency suggests a quarantine of five days for those who are not boosted, but eligible or unvaccinated. Aug 1 2021;175(8):837-845. doi:10.1001/jamapediatrics.2021.0630, Miller AD, Zambrano LD, Yousaf AR, et al. Geneva, Switzerland: World Health Organization; 2021. CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance. 2021/11/01/ 2021;27(11):1658-1665. doi:https://doi.org/10.1016/j.cmi.2021.05.040, Chandler CM, Reid MC, Cherian S, Sabath DE, Edlefsen KL. Early research indicates that the newer versions may be more transmissible and more . On November 28, CDC expanded a voluntary airport-based genomic surveillance program in Atlanta, New York City, Newark, and San Francisco to prioritize recruitment of travelers from southern Africa for testing. Coagulation abnormalities and thrombosis in patients with COVID-19. (6,7) However, it is unclear what percentage of people who have asymptomatic infection progress to clinical disease (presymptomatic presentation). Omicron made up an estimated 73% of new coronavirus cases between Dec. 12 and Dec. 18, according to the CDC. Thank you for taking the time to confirm your preferences. Dermatology. A study of the Oslo Christmas party outbreak found the incubation period could be about three days, compared with 4.3 days for delta and five days for other variants. When Should You Get Tested After a COVID-19 Exposure? Genomic sequencing showed that 92% of 22,953 variants of concern sampled in Japan during January 3February 6 were BA.1 (9). For Immediate Release: Monday, December 27, 2021 Contact: Media Relations (404) 639-3286 Given what we currently know about COVID-19 and the Omicron variant, CDC is shortening the recommended time for isolation for the public. Weekly / December 17, 2021 / 70(50);1731-1734. Asymptomatic and Presymptomatic SARS-CoV-2 Infections in Residents of a Long-Term Care Skilled Nursing Facility - King County, Washington, March 2020. doi:10.1016/S2213-2600(22)00011-X, Jayk Bernal A, Gomes da Silva MM, Musungaie DB, et al. Shorter incubation period among COVID-19 cases with the BA.1 Omicron variant. Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website. Omicron is thought to cause milder symptoms, according to early research.The CDC . https://www.whitehouse.gov/briefing-room/presidential-actions/2021/11/26/a-proclamation-on-suspension-of-entry-as-immigrants-and-nonimmigrants-of-certain-additional-persons-who-pose-a-risk-of-transmitting-coronavirus-disease-2019external icon, https://www.cdc.gov/quarantine/fr-proof-negative-test.html, *** https://www.cdc.gov/quarantine/order-collect-contact-info.html, https://www.cdc.gov/coronavirus/2019-ncov/php/contact-tracing/contact-tracing-plan/overview.html, https://www.cdc.gov/coronavirus/2019-ncov/your-health/quarantine-isolation.html, https://www.cdc.gov/quarantine/masks/mask-travel-guidance.html, **** https://www.cdc.gov/coronavirus/2019-ncov/travelers/international-travel/index.html. Trends in Treatments for Multisystem Inflammatory Syndrome in Children (MIS-C), United States, February 2020 - July 2021. Investigation of a SARS-CoV-2 B.1.1.529 (Omicron) Variant Cluster - Nebraska, November-December 2021. The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website. Johansson MA, Wolford H, Paul P, et al. Among these cases of COVID-19 attributed to the Omicron variant, 34 (79%) occurred inpersons whocompleted the primary series of an FDA-authorized or approved COVID-19 vaccine 14 days before symptom onset or receipt of a positive SARS-CoV-2 test result, including 14 who had received an additional or booster dose; five of the 14 persons had received the additional dose <14 days before symptom onset. SARS-CoV-2 setting-specific transmission rates: a systematic review and meta-analysis. The mean virus incubation period during the SARS-CoV-2 Omicron BA.5-dominant period in Japan was 2.6 (95% CI 2.5-2.8) days, which was less than during the Delta-dominant period. In part, I think [the incubation period] strongly depends upon the infected human.. Multisystem Inflammatory Syndrome in Children During Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Delta and Omicron Variant Circulation-United States, July 2021-January 2022. Lancet Respir Med. Science brief: Omicron (B.1.1.529) variant. MMWR Morb Mortal Wkly Rep. Apr 3 2020;69(13):377-381. doi:10.15585/mmwr.mm6913e1, Sheehan MM, Reddy AJ, Rothberg MB. Uncommon presentations of COVID-19 can occur, might vary by the age of the patient, and are a challenge to recognize. Systematic review and meta-analysis of chest radiograph (CXR) findings in COVID-19. Waltham, MA: ThermoFisher Scientific; 2021. Nov 2020;127(12):1548-1556. doi:10.1111/1471-0528.16403, Siebach MK, Piedimonte G, Ley SH. The first limitation of our study is that the infector and infectee might have been mutually misclassified, leading to overestimation. One vaccinated patient was hospitalized for 2 days, and no deaths have been reported to date. Users guide to variant detection calculators. Symptoms can change over the course of illness and can progress in severity. Fifth, the variant type was not confirmed by using genomic sequencing. JAMA Network Open. Jul 2021;6:100109. doi:10.1016/j.lanepe.2021.100109, Kim L, Garg S, O'Halloran A, et al. Am J Obstet Gynecol. 2020:1-7. doi:10.1080/14767058.2020.1793320, Grechukhina O, Greenberg V, Lundsberg LS, et al. Suggested Citation. Its still important for everyone to get tested regularly if theyve been exposed to ensure that they are not inadvertently spreading the virus, especially since people are infectious before symptoms appear. DOI: http://dx.doi.org/10.15585/mmwr.mm7050e1external icon. Department of Health and Human Services. European Journal of Pediatrics. Some data suggest the incubation period for Omicron may be closer to three days.. Cookies used to make website functionality more relevant to you. Aug 24 2022;75(1):e741-e748. You can review and change the way we collect information below. The Omicron variant has an incubation period of about three days, which is shorter than the incubation period for other variants of the virus that cause COVID-19. With the original COVID-19 variant, symptoms showed up on average around five to six days after contact with an infected person, [while] the Delta variants incubation period was around four days, Beth Oller, MD, a family physician at Solomon Valley Family Medicine, told Verywell. Overall, its important to get vaccinated and boosted against COVID-19 to have protection against severe outcomes of the virus. They help us to know which pages are the most and least popular and see how visitors move around the site. doi:10.1136/bmj.m3320, DeSisto CL, Wallace B, Simeone RM, et al. Hospitalization of Infants and Children Aged 0-4 Years with Laboratory-Confirmed COVID-19 - COVID-NET, 14 States, March 2020-February 2022. Chest. On November 26, WHO designated B.1.1.529 as a variant of concern (3), as did the U.S. SARS-CoV-2 Interagency Group (SIG)* on November 30. New loss of taste or smell. Delta's incubation period was about four days, . The information in this article is current as of the date listed, which means newer information may be available when you read this. Virus Evol 2021;7:veab064. of pages found at these sites. Pulmonary Aspects of COVID-19. The mean virus incubation period during the SARS-CoV-2 Omicron BA.5dominant period in Japan was 2.6 (95% CI 2.52.8) days, which was less than during the Delta-dominant period. Ogata, T., & Tanaka, H. (2023). TaqPath COVID-19 Multiplex Diagnostic Solution. Aug 2021;69(6):1253-1255. doi:10.1136/jim-2021-001853, Roskosky M, Borah BF, DeJonge PM, et al. You can review and change the way we collect information below. New loss of taste or smell . endorsement of these organizations or their programs by CDC or the U.S. The clinical presentation of COVID-19 ranges from asymptomatic to severe illness, and COVID-19 symptoms may change over the course of illness. The 95th percentile distribution for incubation period was estimated at 4.5 (95% CI 4.14.9) days during the BA.5dominant period, 5.2 (95% CI 4.65.9) days during the BA.1dominant period, and 6.1 (95% CI 5.56.8) days during the Delta-dominant period (Table 1; Figure). Shortness of breath or difficulty breathing. Downloads RIS [TXT - 2 KB] . International Journal of Infectious Diseases. Similar to previous variants, just because you dont have symptoms does not mean that you are not spreading the virus to other people. Cough. Global Impact of Coronavirus Disease 2019 Infection Requiring Admission to the ICU: A Systematic Review and Meta-analysis. On 26 November 2021, WHO designated the variant B.1.1.529 a variant of concern, named Omicron, on the advice of WHO's Technical Advisory Group on Virus Evolution (TAG-VE). J Ophthalmic Vis Res. Among people ages 60 and older, the average incubation was 7.43 days. MMWR Morb Mortal Wkly Rep. Apr 10 2020;69(14):416-418. doi:10.15585/mmwr.mm6914e2, Kimball A, Hatfield KM, Arons M, et al. The CDC indicated the infections took 33 to 75 hours, a median of about three days to show symptoms after exposure. part 46.102(l)(2); 21 C.F.R. MMWR Morb Mortal Wkly Rep. Sep 10 2021;70(36):1235-1241. doi:10.15585/mmwr.mm7036a1, Bull-Otterson LB, S.; Saydah, S.; Boehmer, T.; Adjei, S.; Gray, S.; Harris, A. PostCOVID Conditions Among Adult COVID-19 Survivors Aged 1864 and 65 Years United States, March 2020November 2021. Oct 1 2021;4(10):e2128568. The clinical presentation of COVID-19 ranges from asymptomatic to critical illness. Users are referred to the electronic PDF version (https://www.cdc.gov/mmwr) A recent study from the Centers for Disease Control and Prevention (CDC) analyzed data from six people who contracted the Omicron variant of SARS-CoV-2, the virus that causes COVID-19, and found that 73 hours (or three days) was the typical incubation period for patients. We fitted incubation period data for each subvariant to the gamma distribution model and calculated parameters and 95% CI within a Bayesian inference framework. Pediatr Infect Dis J. Apr 1 2022;41(4):315-323. doi:10.1097/inf.0000000000003449, Abrams JY, Belay ED, Godfred-Cato S, et al. MMWR Morb Mortal Wkly Rep. Mar 4 2022;71(9):335-340. doi:10.15585/mmwr.mm7109a2, Burki TK. Jan 18 2022;327(3):281-283. doi:10.1001/jama.2021.23262, Nygaard U, Holm M, Hartling UB, et al. JAMA Netw Open. EClinicalMedicine. Jun 18 2022;399(10343):2263-2264. doi:10.1016/S0140-6736(22)00941-2, Notarte KI, Catahay JA, Velasco JV, et al. the date of publication. Characterizing long COVID in an international cohort: 7 months of symptoms and their impact. Clinical Characteristics and Outcomes of Hospitalized Women Giving Birth With and Without COVID-19. If a pair shared meals on July 4 and the infectee had COVID-19 symptoms on July 7, we calculated an incubation period of 3 days. He says multiple studies have shown that "there's very little, if any, transmission after day 10, regardless of the variant . A shorter incubation suggests a shorter quarantine period for BA.5 than for other variants. Among the cases described in this report, the earliest report of symptom onset was November 15. Accessed December 2, 2021. This prioritization should be balanced with maintaining case investigation and contact tracing for outbreaks of confirmed cases of SARS-CoV-2 infection in high-risk congregate settings (e.g., long-term care facilities, correctional facilities, and homeless shelters) and for persons at increased risk for severe COVID-19related health outcomes. Characteristics of Adult Outpatients and Inpatients with COVID-19 - 11 Academic Medical Centers, United States, March-May 2020. For those without symptoms, CDC guidance states they are considered contagious at least two days before their positive test. Emerg Infect Dis. Mar 11 2021;21(1):257. doi:10.1186/s12879-021-05950-x, Grant R, Charmet T, Schaeffer L, et al. Risk Factors for COVID-19-associated hospitalization: COVID-19-Associated Hospitalization Surveillance Network and Behavioral Risk Factor Surveillance System. Sect. Finally, increasing patient numbers might have influenced the quality of contact tracing by the PHC. SARS-CoV-2 Incubation Period during the Omicron BA.5Dominant Period in Japan. N Engl J Med. We performed multivariate gamma regression analyses; transmission during shared meals (p = 0.03) and age of infector (p = 0.007) correlated significantly with incubation period (Table 2). 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But it would help explain the variant's rapid spread. The American Journal of Emergency Medicine. COVID-19 Vaccination Coverage Among Insured Persons Aged >/=16 Years, by Race/Ethnicity and Other Selected Characteristics - Eight Integrated Health Care Organizations, United States, December 14, 2020-May 15, 2021. What Is the Incubation Period for the Flu This Year? Racial Bias in Pulse Oximetry Measurement. The risk of severe COVID-19 increases with increasing age over 40 years and with increasing number of certain, Shortness of breath or difficulty breathing. Because symptoms may progress quickly, close follow-up is needed, especially for older adults, people with disabilities, people with immunocompromising conditions, and people with medical conditions that place them at greater risk for severe illness or death. BMC Med 2021;19:94. Apr 2021;27(4):626-631. doi:10.1038/s41591-021-01292-y, Daugherty SE, Guo Y, Heath K, et al. What are the implications for public health practice? Regarding the isolation period for COVID-19 generally, the CDC states that people must isolate for 10 days after symptoms first show up and can stop after that as long as they haven't had a. Of secondary cases, 90% had an incubation period of 6 days for Omicron and 7 days for Delta. MMWR Morb Mortal Wkly Rep. Jan 28 2022;71(4):125-131. doi:10.15585/mmwr.mm7104e1, Cavanaugh AM, Spicer KB, Thoroughman D, Glick C, Winter K. Reduced Risk of Reinfection with SARS-CoV-2 After COVID-19 Vaccination - Kentucky, May-June 2021. JAMA Network Open. Incubation period correlated with shared meals and adult infectors. Journal of Infection. Two new Omicron subvariantsBA.4 and BA.5now account for 13% of new COVID-19 cases in the United States, a sizable leap from early May when the variants only accounted for 1%, according to data from the Centers for Disease Control and Prevention (CDC). The incubation period of a virus is the number of days between the time a person gets infected and when symptoms begin to appear. Booster doses are especially urgent for those at higher risk of severe disease, such as persons residing in nursing homes and long-term care facilities. By Carla Delgado Skin Manifestations Associated with COVID-19: Current Knowledge and Future Perspectives. Accessed December 3, 2021. Thank you, {{form.email}}, for signing up. 2021;237(1):1-12. doi:10.1159/000512932, Thompson HA, Mousa A, Dighe A, et al. SARS-CoV-2 Spike Antibody, Dominican Republic, https://www.who.int/en/activities/tracking-SARS-CoV-2-variants, https://www.niid.go.jp/niid/en/2019-ncov-e/11411-covid19-ab94th-en.html, https://www.niid.go.jp/niid/en/2019-ncov-e/2484-idsc/9472-2019-ncov-02-en.html, https://www.pref.ibaraki.jp/1saigai/2019-ncov/shiryouteikyou.html, https://www.pref.ibaraki.jp/hokenfukushi/eiken/kikaku/covid-19_ibarakieiken_kensa.html, https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000121431_00333.html, https://www.mhlw.go.jp/content/000968056.pdf, SARS-CoV-2 Incubation Period during the Omicron BA.5Dominant Period in Japan, U.S. Department of Health & Human Services, Ogata T, Tanaka H. SARS-CoV-2 Incubation Period during the Omicron BA.5Dominant Period in Japan. We estimated the monovariable mean incubation period of 122 patients during the BA.5dominant period. This report summarizes U.S. surveillance for SARS-CoV-2 variants, characteristics of the initial persons investigated with COVID-19 attributed to the Omicron variant and public health measures implemented to slow the spread of Omicron in the United States. study . The Journal of Maternal-Fetal & Neonatal Medicine. A shorter incubation suggests a shorter quarantine period for BA.5 than for other variants. Genomic evidence for reinfection with SARS-CoV-2: a case study. Of the 1,216 samples collected during January 3February 6 in Ibaraki, a total of 1,158 (95%) were negative for the SARS-CoV-2 spike protein mutation L452R (8). Omicron has numerous mutations with potential to increase transmissibility, confer resistance to therapeutics, or partially escape infection- or vaccine-induced immunity (2). For the week ending December 4, the Delta variant accounted for >99.9% of circulating SARS-CoV-2 variants. BNT162b2 mRNA Vaccination Against COVID-19 is Associated with Decreased Likelihood of Multisystem Inflammatory Syndrome in U.S. Children Ages 5-18 Years. Impact of SARS-CoV-2 Delta variant on incubation, transmission settings and vaccine effectiveness: Results from a nationwide case-control study in France. Heres what that means for infected individuals. doi:10.1016/j.cmi.2021.07.030, Abu-Raddad LJ, Chemaitelly H, Bertollini R, National Study Group for C-E. Severity of SARS-CoV-2 Reinfections as Compared with Primary Infections. This decision was based on the evidence presented to the TAG-VE that Omicron has several mutations that may have an impact on how it behaves, for example . Coronavirus disease 2019 pregnancy outcomes in a racially and ethnically diverse population. Euro Surveill. Racial and Ethnic Disparities in Receipt of Medications for Treatment of COVID-19 - United States, March 2020-August 2021. On December 1, the first case of COVID-19 attributed to the Omicron variant was reported in the United States. Cookies used to enable you to share pages and content that you find interesting on CDC.gov through third party social networking and other websites. CDC has developed a working case definition for MIS-A. References to non-CDC sites on the Internet are The best way to protect yourself and those around you is to get vaccinated, Oller said. doi:10.1093/cid/ciab936, Patel P, DeCuir J, Abrams J, Campbell AP, Godfred-Cato S, Belay ED. Aug 2021;38:101019. doi:10.1016/j.eclinm.2021.101019, Groff D, Sun A, Ssentongo AE, et al. Clinical considerations for care of children and adults with confirmed COVID-19, Data suggest that incubation periods may differ by variant of the virus. The. COVID-19 in Immunocompromised Hosts: What We Know So Far. and/or the original MMWR paper copy for printable versions of official text, figures, and tables. Dec 2021;27(12):1860 e7-1860 e10. The estimated mean incubation period was shorter for patients during the BA.5dominant period than during the Delta-dominant period. The Lancet Child & Adolescent Health. (9), Fever, cough, shortness of breath, fatigue, headache, and myalgia are among the most commonly reported symptoms in people with COVID-19. provided as a service to MMWR readers and do not constitute or imply Clin Infect Dis. 2021;156(2):185-197. doi:10.1093/ajcp/aqab052, Levi M, Thachil J, Iba T, Levy JH. COVID-19 vaccine effectiveness among immunocompromised populations: a targeted literature review of real-world studies.
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