omicron incubation period 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. A wide range of dermatologic manifestations have been associated with COVID-19; timing of skin manifestations in relation to other COVID-19 symptoms and signs is variable. Message not sent. 2022;386(8):744-756. doi:10.1056/NEJMoa2116597, Lansbury L, Lim B, Baskaran V, Lim WS. By Carla Delgado As of December 8, one of these pools was confirmed positive for Omicron, and four were pending. Under . 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. Clin Infect Dis. COVID-19 in Immunocompromised Hosts: What We Know So Far. SARS-CoV-2 shedding dynamics across the respiratory tract, sex, and disease severity for adult and pediatric COVID-19. There was an unexpected error. Epidemiologists believe Omicron has a shorter incubation period than the original variant, around 2 to 3 days. We defined patients in the Omicron BA.5dominant period as those who had symptoms during July 4August 19, 2022. People can experience asymptomatic SARS-CoV-2 infection, including people who are up to date with their vaccinesand people who were previously infected. Omicron is highly transmissible. Scientists are looking for clues - NPR 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. MMWR Morb Mortal Wkly Rep. Mar 18 2022;71(11):429-436. doi:10.15585/mmwr.mm7111e2, Delahoy MJ, Ujamaa D, Whitaker M, et al. Systematic review and meta-analysis of chest radiograph (CXR) findings in COVID-19. Through this program, international air travelers are offered molecular testing of pooled samples collected upon arrival and a take-home collection kit (saliva collection for nucleic acid amplification test) to be used 35 days after arrival with subsequent sequencing of SARS-CoV-2positive specimens; persons in pools with a positive test result are contacted and advised to get retested using the home collection kit or another method. 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. SARS-CoV-2 in pregnancy: characteristics and outcomes of hospitalized and non-hospitalized women due to COVID-19. Omicron BA.5 variant | COVID-19 | UC Davis Health All persons aged 5 years should be vaccinated against COVID-19. Emerg Infect Dis. 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. Community and close contact exposures associated with COVID-19 among symptomatic adults. CDC is also supporting efforts to prevent, detect, and respond to COVID-19 internationally, including through support for laboratory and sequencing capacity and strengthening global vaccine programs. Omicron is swifter still, with an incubation period of roughly three days, according to a recent C.D.C. Use of At-Home COVID-19 Tests United States, August 23, 2021March 12, 2022. The. Geneva, Switzerland: World Health Organization; 2021. JAMA. To receive email updates about COVID-19, enter your email address: We take your privacy seriously. (10) Loss of smell and taste may be reported initial symptoms of COVID-19. In summary, our results indicate that the SARS-CoV-2 Omicron BA.5 subvariant has a shorter incubation period than other variants. MMWR Morb Mortal Wkly Rep. Aug 13 2021;70(32):1081-1083. doi:10.15585/mmwr.mm7032e1, National Center for Immunization and Respiratory Diseases (NCIRD), Post-COVID Conditions: Healthcare Providers, Decontamination & Reuse of N95 Respirators, Purchasing N95 Respirators from Another Country, Powered Air Purifying Respirators (PAPRs), U.S. Department of Health & Human Services. MMWR Morb Mortal Wkly Rep 2021;70:1731-1734. Classification of Omicron (B.1.1.529): SARS-CoV-2 variant of concern. Six (14%) persons had a documented previous SARS-CoV-2 infection. The first U.S. case of COVID-19 attributed to the Omicron variant was identified on December 1. 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. Public health departments and laboratories in Arizona, California (including Alameda County, Los Angeles, and San Francisco), Colorado, Connecticut, Florida, Georgia, Hawaii, Illinois, Louisiana, Maryland, Massachusetts, Minnesota, Mississippi, Missouri, Nebraska, New Jersey, New York, (including New York City), Pennsylvania, Texas, Utah, Washington, and Wisconsin. Many of the first reported cases of Omicron variant infection appear to be mild (7), although as with all variants, a lag exists between infection and more severe outcomes, and symptoms would be expected to be milder in vaccinated persons and those with previous SARS-CoV-2 infection than in unvaccinated persons. Table 1 - SARS-CoV-2 Incubation Period during the Omicron BA.5-Dominant The score is derived from an automated algorithm, and represents a weighted count of the amount of attention Altmetric picked up for a research output. What is the incubation period of Omicron BA.2? We defined the patient with the later symptom onset in each pair as the infected patient. A shorter incubation suggests a shorter quarantine period for BA.5 than for other variants. Bmj. The average duration of illness is shorter with Omicron than Delta: five days compared to six. Shortness of breath or difficulty breathing. Effectiveness of Pfizer-BioNTech and Moderna Vaccines Against COVID-19 Among Hospitalized Adults Aged >/=65 Years - United States, January-March 2021. 241(d); 5 U.S.C. Reinfection Rates Among Patients Who Previously Tested Positive for Coronavirus Disease 2019: A Retrospective Cohort Study. Update on Omicron. These cookies may also be used for advertising purposes by these third parties. Cookies used to make website functionality more relevant to you. Johansson MA, Wolford H, Paul P, et al. MMWR Morb Mortal Wkly Rep. Nov 6 2020;69(44):1641-1647. doi:10.15585/mmwr.mm6944e3, Jamieson DJ, Rasmussen SA. Trends in Disease Severity and Health Care Utilization During the Early Omicron Variant Period Compared with Previous SARS-CoV-2 High Transmission Periods - United States, December 2020-January 2022. How Long Before Omicron Symptoms Appear After COVID Exposure? - NBC Boston Characteristics, Outcomes, and Severity Risk Factors Associated With SARS-CoV-2 Infection Among Children in the US National COVID Cohort Collaborative. Feb 9 2021;doi:10.1093/cid/ciab100, Singanayagam A, Patel M, Charlett A, et al. COVID-19 signs, symptoms and severity of disease: A clinician guide 2021;325(11):1074. doi:10.1001/jama.2021.2091, Wanga V, Gerdes ME, Shi DS, et al. One vaccinated patient was hospitalized for 2 days, and no deaths have been reported to date. Response to additional COVID-19 vaccine doses in people who are immunocompromised: a rapid review. Dec 23 2021;385(26):2487-2489. doi:10.1056/NEJMc2108120, Rossler A, Riepler L, Bante D, von Laer D, Kimpel J. SARS-CoV-2 Omicron Variant Neutralization in Serum from Vaccinated and Convalescent Persons. Coronavirus (COVID-19) Infection Survey Technical Article: Impact of vaccination on testing positive in the UK. Saving Lives, Protecting People, Itako Public Health Center of Ibaraki Prefectural Government, Ibaraki, Japan (T. Ogata), Public Health Center of Neyagawa City, Osaka, Japan (H. Tanaka), National Institute of Infectious Diseases. N Engl J Med. Even if most infections are mild, a highly transmissible variant could result in enough cases to overwhelm health systems. What Is the Incubation Period of Omicron, How Long Are You - Newsweek The American Journal of Emergency Medicine. May 2022;28(5):986-989. doi:10.3201/eid2805.220166, Saelee R, Zell E, Murthy BP, et al. Paediatric hospitalisations due to COVID-19 during the first SARS-CoV-2 omicron (B.1.1.529) variant wave in South Africa: a multicentre observational study. Multistate Outbreak of SARS-CoV-2 B.1.1.529 (Omicron) Second, patient pairs with long incubation periods might be censored during observational periods, and selection bias might result in underestimation. doi:10.1503/cmaj.202604, Allotey J, Stallings E, Bonet M, et al. RACGP - How does Omicron compare with Delta? - NewsGP 2020/08/01/ 2020;81(2):266-275. doi:https://doi.org/10.1016/j.jinf.2020.05.046, Gerver SM, Guy R, Wilson K, et al. 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. Accessed December 3, 2021. The average incubation period tends to differ among COVID-19 variants, and data suggest that it may be shorter for Omicron. Centers for Disease Control and Prevention. Dr. Roy Gulick, the chief of infectious diseases at Weill Cornell Medical Center and NewYork-Presbyterian, said typical symptoms of the omicron subvariants include: Sore throat. The estimated mean incubation period for patients during the Omicron BA.5dominant period in this region was 2.6 days. Am J Emerg Med. CDC updates and shortens recommended isolation and quarantine period for general population. In September 2021, a systematic review of all MIS-A publications reported a total of 221 cases, with a median age of 21 years and 70% of the cases being male. (1) A study conducted during high levels of Delta variant transmission reported an incubation period of 4.3 days, (2) and studies performed during high levels of Omicron variant transmission reported a median incubation period of 3-4 days. People are generally contagious one to . All information these cookies collect is aggregated and therefore anonymous. Muscle or body aches. Virus Evol 2021;7:veab064. Sep 1 2020;370:m3320. The omicron variant may create mild COVID-19 symptoms and reinfect previously infected COVID-19 patients, but it could have a shorter incubation time than previous COVID-19 strains, according to a new Centers for Disease Control and Prevention report.. CDC investigates omicron variant spread. MMWR Morb Mortal Wkly Rep. Jan 28 2022;71(4):146-152. doi:10.15585/mmwr.mm7104e4, Taylor CA, Whitaker M, Anglin O, et al. How long are. Pediatr Infect Dis J. Dec 1 2021;40(12):e482-e487. Omicron's Incubation Period Is Short: Here's Why That - Yahoo Finance The incubation period might be influenced by various factors, such as viral load, environmental setting, patient immune response, severity of disease, and selection biases. Long-Term Symptoms Among Adults Tested for SARS-CoV-2 - United States, January 2020-April 2021. SARS-CoV-2 Infection and Hospitalization Among Adults Aged >/=18 Years, by Vaccination Status, Before and During SARS-CoV-2 B.1.1.529 (Omicron) Variant Predominance - Los Angeles County, California, November 7, 2021-January 8, 2022. MMWR Morb Mortal Wkly Rep. Nov 26 2021;70(47):1640-1645. doi:10.15585/mmwr.mm7047e1, Hcini N, Maamri F, Picone O, et al. Multisystem inflammatory syndrome in adults (MIS-A): case finding through systematic review of electronic medical records. New loss of taste or smell . These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests. doi:10.1542/peds.2021-053418, Preston LE, Chevinsky JR, Kompaniyets L, et al. In adults, age is the strongest risk factor for severe COVID-19. Questions or messages regarding errors in formatting should be addressed to Coronavirus live updates and omicron variant news - The Washington Post The CDC says COVID-19 may cause the following symptoms: Fever or chills. Omicron is thought to cause milder symptoms, according to early research.The CDC . Comment submitted successfully, thank you for your feedback. CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website. These cookies may also be used for advertising purposes by these third parties. CDC is not responsible for the content doi:10.1136/bmj.o110, Fung M, Babik JM. The symptoms of the latest omicron subvariants are mostly similar to those of the earlier version of omicron. Jan 15 2021;doi:10.1001/jamainternmed.2020.9241, Matar R, Alrahmani L, Monzer N, et al. The four participating airports receive a large, diverse volume of international travelers, including direct flights from southern Africa. Apr 19 2021;193(16):E540-e548. These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests. BA.2 is a sub-variant of Omicron, which means it is likely that it has a shorter incubation period as well, Oller said. These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. Mutations in Omicron might increase transmissibility, confer resistance to therapeutics, or partially escape infection- or vaccine-induced immunity. American Journal of Clinical Pathology. A new variant of SARS-CoV-2 (the virus that causes COVID-19), B.1.1.529 (Omicron) (1), was first reported to the World Health Organization (WHO) by South Africa on November 24, 2021. But while it's taking less time to develop symptoms, for many people it is also taking less time to recover. Our results might warrant a reduction of the quarantine period from 7 to 5 days during the BA.5dominant period in Japan (13). Hoarse voice. Pediatr Infect Dis J. Prevalence and clinical presentation of long COVID in children: a systematic review. When am I contagious if infected with omicron? - WTOP News The clinical presentation of COVID-19 ranges from asymptomatic to severe illness, and COVID-19 symptoms may change over the course of illness. During December 18, 2021, 22 U.S. states reported at least one COVID-19 case attributed to the Omicron variant. Landon E, Bartlett AH, Marrs R, Guenette C, Weber SC, Mina MJ. Global Impact of Coronavirus Disease 2019 Infection Requiring Admission to the ICU: A Systematic Review and Meta-analysis. Older adults may present with different symptoms than children and younger adults. 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. Use of trade names and commercial sources is for identification only and does not imply endorsement by the U.S. Department of Centers for Disease Control and Prevention. CDC twenty four seven. As of December 8, cases had been reported from across the country; 22 states have reported at least one case (Arizona, California, Colorado, Connecticut, Florida, Georgia, Hawaii, Illinois, Louisiana, Maryland, Massachusetts, Minnesota, Mississippi, Missouri, Nebraska, New Jersey, New York, Pennsylvania, Texas, Utah, Washington, and Wisconsin) (Figure). Clinical Presentation and Outcomes of Pregnant Women With Coronavirus Disease 2019: A Systematic Review and Meta-analysis. Accessed December 3, 2021. Investigation of a SARS-CoV-2 B.1.1.529 (Omicron) Variant Cluster Incubation periods for Omicron BA.1 were reported to be 3.3 days in Norway, 4.6 days in South Korea, 3.2 days in the Netherlands, 3.1 days in Spain, and 2.9 days in Japan (6,10,11); incubation period for BA.2 was 4.4 days in Hong Kong (12). More information is available, Recommendations for Fully Vaccinated People, people who are up to date with their vaccines, Clinical Progression, Management, and Treatment, Alene M, Yismaw L, Assemie MA, Ketema DB, Gietaneh W, Birhan TY. 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. CDC twenty four seven. European Journal of Pediatrics. Meta-analyses of studies published in 2020 identified a pooled mean incubation period of 6.5 days from exposure to symptom onset. The first limitation of our study is that the infector and infectee might have been mutually misclassified, leading to overestimation. A 2021 study published in BMC Public Health found that the incubation period of the virus may vary by age. However, there was a range: Some . Omicron Incubation Period: How Long Are You Contagious With COVID Users are referred to the electronic PDF version (https://www.cdc.gov/mmwr) With other variants, the median incubation period was five days or more, with Delta about four days. (CDC) shows the seven-day moving average of covid-19 cases was 26,106 as of April 1, ever so slightly lower than 26,309 from a week earlier. Apr 20 2022;doi:10.1093/cid/ciac303, Hernandez-Romieu AC, Leung S, Mbanya A, et al. Characteristics of Persons Who Died with COVID-19 - United States, February 12-May 18, 2020. Of secondary cases, 90% had an incubation period of 6 days for Omicron and 7 days for Delta. Pediatr Infect Dis J. Mar 1 2022;41(3):e81-e86. Am J Obstet Gynecol. If You Have COVID-19, Is It Really Safe to Only Isolate for 5 Days? The Centers for Disease Control and Prevention recently shortened its isolation guideline s, citing evidence that COVID is most contagious 1 to 2 days before someone starts feeling symptoms and 2 to 3 days after. What are the implications for public health practice? People reinfected with omicron variant had fewer symptoms, small CDC 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. 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. A partially vaccinated person had received a COVID-19 vaccine but not completed the primary series 14 days before illness onset or receipt of a positive SARS-CoV-2 test result. Nasal congestion. Case investigations have identified exposures associated with international and domestic travel, large public events, and household transmission. 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. CDC Study Says Omicron Variant's Incubation Period Is About 3 - MSN PDF SARS-CoV-2 Incubation Period during the Omicron BA.5- Dominant Period Aug 2021;38:101019. doi:10.1016/j.eclinm.2021.101019, Groff D, Sun A, Ssentongo AE, et al. Cough. Clin Infect Dis. During the past several years, CDC has intensified efforts to significantly expand genomic sequencing capacity at the federal and state levels. 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). MMWR Morb Mortal Wkly Rep. April 1, 2022;71(13):489494. Jan 27 2022;73:81-93. doi:10.1146/annurev-med-042220-014817, Bhaskaran K, Bacon S, Evans SJ, et al. You will be subject to the destination website's privacy policy when you follow the link. Waltham, MA: ThermoFisher Scientific; 2021. 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. Jun 18 2022;399(10343):2263-2264. doi:10.1016/S0140-6736(22)00941-2, Notarte KI, Catahay JA, Velasco JV, et al. doi:10.1001/jamanetworkopen.2021.43151, Kompaniyets L, Agathis NT, Nelson JM, et al. 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. doi:10.1136/bmj-2021-068632, Embi PJ, Levy ME, Naleway AL, et al. Molnupiravir for Oral Treatment of Covid-19 in Nonhospitalized Patients. Apr 1 2021;4(4):e215298. Mar 2022;28(3):756-759. doi:10.3201/eid2803.212607, Stokes EK, Zambrano LD, Anderson KN, et al. ** Based on CDC analysis of the sequences currently available, and accounting for clustering, CDC estimates a 95% chance of detecting the Omicron variant if it accounted for 0.03% of circulating SARS-CoV-2 lineages during the week ending November 13 and for 0.05% of circulating lineages during the week ending November 20 (4). Accessed December 2, 2021. Sep 2021;8(9):ofab428. endorsement of these organizations or their programs by CDC or the U.S. Omicron and its subvariants have shorter incubation periods, which means it takes less time for symptoms to appear after exposure to the virus. An infected person can transmit of SARS-CoV-2 before the onset of symptoms. Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment. (1) A study conducted during high levels of Delta variant transmission reported an incubation period of 4.3 days,(2) and studies performed during high levels of Omicron variant transmission reported a median incubation period of 34 days.(3,4). . According to the Australian Department of Health, the incubation period for COVID-19 can range between one and 14 days, with most cases displaying symptoms by day 5 or 6 after exposure. Uncommon presentations of COVID-19 can occur, might vary by the age of the patient, and are a challenge to recognize. All information these cookies collect is aggregated and therefore anonymous. Saving Lives, Protecting People, Given new evidence on the B.1.617.2 (Delta) variant, CDC has updated the, The White House announced that vaccines will be required for international travelers coming into the United States, with an effective date of November 8, 2021. according to reports from the CDC. These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests. The Journal of infection. Dec 2021;27(12):1860 e7-1860 e10. (9), Fever, cough, shortness of breath, fatigue, headache, and myalgia are among the most commonly reported symptoms in people with COVID-19. Jul 16 2020;doi:10.1093/cid/ciaa1012, Kompaniyets L, Pennington AF, Goodman AB, et al. Association between COVID-19 diagnosis and presenting chief complaint from New York City triage data. Infectees exposed while eating do not normally wear masks and may share longer exposure times, so they might be exposed to a higher viral load than those exposed through conversations while wearing a mask. International Journal of Infectious Diseases. During the Delta-dominant period, the mean incubation period was 3.7 (3.44.0) days, and the median was 3.5 (3.23.8) days. We thank the staff of the Itako Public Health Center, Ibaraki Prefectural Institute of Public Health, and government of Ibaraki Prefecture for their contributions to our study. Early research indicates that the newer versions may be more transmissible and more . Jul 15 2021;73(Suppl 1):S5-S16. Epidemiology of Infections with SARS-CoV-2 Omicron BA.2 Variant, Hong Kong, January-March 2022. If you need to go back and make any changes, you can always do so by going to our Privacy Policy page. Moreover, it is still necessary to wear a well-fitting mask and stay away from other people as much as possible for about five days after leaving isolation, experts said. What is the Incubation Period for the Omicron Variant and How Long Are Science brief: Omicron (B.1.1.529) variant. CDC says the majority of virus transmission occurs one to two days before symptom onset and two to three days after. Effectiveness of a Third Dose of Pfizer-BioNTech and Moderna Vaccines in Preventing COVID-19 Hospitalization Among Immunocompetent and Immunocompromised Adults - United States, August-December 2021. But it would help explain the variant's rapid spread. Feb 24 2022;386(8):713-723. doi:10.1056/NEJMoa2117995, Price AM, Olson SM, Newhams MM, et al. In December, the CDC issued new guidance reducing the isolation period of infected individuals to five days, if their symptoms have fully resolved. Centers for Disease Control and Prevention. CDC recommends prioritizing case investigation and contact tracing for confirmed COVID-19 cases attributed to the Omicron variant. Risk Factors for COVID-19-associated hospitalization: COVID-19-Associated Hospitalization Surveillance Network and Behavioral Risk Factor Surveillance System. Clinical manifestations, risk factors, and maternal and perinatal outcomes of coronavirus disease 2019 in pregnancy: living systematic review and meta-analysis. N Engl J Med. the date of publication. 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. The Journal of Maternal-Fetal & Neonatal Medicine. Serial interval and incubation period of COVID-19: a systematic review and meta-analysis. The CDC says that its guidelines were updated to reflect growing evidence that suggests transmission of COVID-19 often occurs one to two days before the onset of symptoms and during the two to . Since July 2022, Omicron BA.5 has been the dominant variant in Japan (2,3). A small study from CDC also . SARS-CoV-2 Incubation Period during the Omicron BA.5Dominant Period in Japan. A negative test result closer to the time of travel enhances reduction in transmission risk during travel (6). (12), Several studies have reported ocular symptoms associated with COVID-19 infection, including redness, tearing, dry eye or foreign body sensation, discharge or increased secretions, and eye itching or pain.(13). Sect. doi:10.1001/jamanetworkopen.2021.28568, Tillett RL, Sevinsky JR, Hartley PD, et al. doi:10.1001/jamanetworkopen.2021.26456, Melgar M, Haston J, DeCuir J, et al. EClinicalMedicine. Figures Figure. The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website. Characterizing long COVID in an international cohort: 7 months of symptoms and their impact. mmwrq@cdc.gov. Downloads RIS [TXT - 2 KB] . Some data suggest the incubation period for Omicron may be closer to three days.. 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.