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Figure 1.  USPSTF Grades and Levels of Evidence
USPSTF Grades and Levels of Evidence

USPSTF indicates US Preventive Services Task Force.

Figure 2.  Clinical Summary: Ocular Prophylaxis for Gonococcal Ophthalmia Neonatorum
Clinical Summary: Ocular Prophylaxis for Gonococcal Ophthalmia Neonatorum

USPSTF indicates US Preventive Services Task Force.

1.
Centers for Disease Control and Prevention (CDC). Sexually transmitted disease surveillance 2017. CDC website. https://www.cdc.gov/std/stats17/default.htm. Updated October 15, 2018. Accessed December 3, 2018.
2.
Kreisel  K, Weston  E, Braxton  J, Llata  E, Torrone  E.  Keeping an eye on chlamydia and gonorrhea conjunctivitis in infants in the United States, 2010-2015.  Sex Transm Dis. 2017;44(6):356-358. doi:10.1097/OLQ.0000000000000613PubMedGoogle ScholarCrossref
3.
Guirguis-Blake  J, Evans  C, Rushkin  M.  Ocular Prophylaxis for Gonococcal Ophthalmia Neonatorum: A Reaffirmation Evidence Update for the US Preventive Service Task Force: Evidence Synthesis No. 173. Rockville, MD: Agency for Healthcare Research and Quality; 2018. AHRQ publication 18-05244-EF-1.
4.
Guirguis-Blake  JM, Evans  CV, Rushkin  M.  Ocular prophylaxis for gonococcal ophthalmia neonatorum: updated evidence report and systematic review for the US Preventive Services Task Force  [published January 29, 2018].  JAMA. doi:10.1001/jama.2018.17847Google Scholar
5.
US Preventive Services Task Force.  Ocular Prophylaxis for Gonococcal Ophthalmia Neonatorum: US Preventive Services Task Force Reaffirmation Recommendation Statement. Rockville, MD: Agency for Healthcare Research and Quality; 2011.
6.
Snowe  RJ, Wilfert  CM.  Epidemic reappearance of gonococcal ophthalmia neonatorum.  Pediatrics. 1973;51(1):110-114.PubMedGoogle Scholar
7.
Woods  CR.  Gonococcal infections in neonates and young children.  Semin Pediatr Infect Dis. 2005;16(4):258-270. doi:10.1053/j.spid.2005.06.006PubMedGoogle ScholarCrossref
8.
Laga  M, Meheus  A, Piot  P.  Epidemiology and control of gonococcal ophthalmia neonatorum.  Bull World Health Organ. 1989;67(5):471-477.PubMedGoogle Scholar
9.
US Preventive Services Task Force (USPSTF). US Preventive Services Task Force Procedure Manual. USPSTF website. https://www.uspreventiveservicestaskforce.org/Page/Name/procedure-manual. October 2018. Accessed December 3, 2018.
10.
Centers for Disease Control and Prevention (CDC). 2015 sexually transmitted diseases treatment guidelines. CDC website. https://www.cdc.gov/std/tg2015/default.htm. Updated January 25, 2017. Accessed December 3, 2018.
11.
Hammerschlag  MR.  Chlamydial and gonococcal infections in infants and children.  Clin Infect Dis. 2011;53(suppl 3):S99-S102. doi:10.1093/cid/cir699PubMedGoogle ScholarCrossref
12.
Martin  JA, Hamilton  BE, Osterman  MJK.  Births in the United States, 2016.  NCHS Data Brief. 2017;(287):1-8.PubMedGoogle Scholar
13.
LeFevre  ML; U.S. Preventive Services Task Force.  Screening for chlamydia and gonorrhea: U.S. Preventive Services Task Force recommendation statement.  Ann Intern Med. 2014;161(12):902-910. doi:10.7326/M14-1981PubMedGoogle ScholarCrossref
14.
Pilling  R, Long  V, Hobson  R, Schweiger  M.  Ophthalmia neonatorum: a vanishing disease or underreported notification?  Eye (Lond). 2009;23(9):1879-1880. doi:10.1038/eye.2008.364PubMedGoogle ScholarCrossref
15.
Schaller  UC, Klauss  V.  Is Credé’s prophylaxis for ophthalmia neonatorum still valid?  Bull World Health Organ. 2001;79(3):262-263.PubMedGoogle Scholar
16.
Stephenson  S.  Ophthalmia Neonatorum With Especial Reference to Its Causation and Prevention. London, United Kingdom: George Pulman, Ophthalmoscope Press; 1907.
17.
Fransen  L, Nsanze  H, Klauss  V,  et al.  Ophthalmia neonatorum in Nairobi, Kenya: the roles of Neisseria gonorrhoeae and Chlamydia trachomatis.  J Infect Dis. 1986;153(5):862-869. doi:10.1093/infdis/153.5.862PubMedGoogle ScholarCrossref
18.
US Preventive Services Task Force. Screening for gonorrhea—including ocular prophylaxis in newborns. In:  Guide to Clinical Preventive Services: Report of the U.S. Preventive Services Task Force. 2nd ed. Baltimore, MD: Williams & Wilkins; 1996.
19.
U.S. Preventive Services Task Force.  Screening for gonorrhea: recommendation statement.  Ann Fam Med. 2005;3(3):263-267. doi:10.1370/afm.337PubMedGoogle ScholarCrossref
20.
American Academy of Pediatrics, American College of Obstetricians and Gynecologists.  Guidelines for Perinatal Care. 8th ed. Elk Grove Village, IL: American Academy of Pediatrics; 2017.
21.
World Health Organization.  WHO Guidelines for the Treatment of Neisseria gonorrhoeae. Geneva, Switzerland: World Health Organization; 2016.
22.
Moore  DL, MacDonald  NE; Canadian Paediatric Society, Infectious Diseases and Immunization Committee.  Preventing ophthalmia neonatorum.  Paediatr Child Health. 2015;20(2):93-96.PubMedGoogle Scholar
US Preventive Services Task Force
Recommendation Statement
January 29, 2019

Ocular Prophylaxis for Gonococcal Ophthalmia Neonatorum: US Preventive Services Task Force Reaffirmation Recommendation Statement

US Preventive Services Task Force
JAMA. 2019;321(4):394-398. doi:10.1001/jama.2018.21367
Abstract

Importance  In the United States, the rate of gonococcal ophthalmia neonatorum was an estimated 0.4 cases per 100 000 live births per year from 2013 to 2017. Gonococcal ophthalmia neonatorum can cause corneal scarring, ocular perforation, and blindness as early as 24 hours after birth. In the absence of ocular prophylaxis, transmission rates of gonococcal infection from mother to newborn are 30% to 50%.

Objective  To reaffirm the US Preventive Services Task Force (USPSTF) 2011 recommendation on ocular prophylaxis for gonococcal ophthalmia neonatorum.

Evidence Review  The USPSTF commissioned a reaffirmation evidence update to identify new and substantial evidence sufficient enough to change its prior recommendation.

Findings  Using a reaffirmation process, the USPSTF found no new data that would change its previous conclusion that topical ocular prophylaxis is effective in preventing gonococcal ophthalmia neonatorum and related ocular conditions. The USPSTF found no new data that would change its previous conclusion that there is convincing evidence that topical ocular prophylaxis of all newborns is not associated with serious harms. Therefore, the USPSTF reaffirms its previous conclusion that there is convincing evidence that topical ocular prophylaxis for all newborns provides substantial benefit.

Conclusions and Recommendation  The USPSTF recommends prophylactic ocular topical medication for all newborns to prevent gonococcal ophthalmia neonatorum. (A recommendation)

Introduction

The US Preventive Services Task Force (USPSTF) makes recommendations about the effectiveness of specific preventive care services for patients without obvious related signs or symptoms.

It bases its recommendations on the evidence of both the benefits and harms of the service and an assessment of the balance. The USPSTF does not consider the costs of providing a service in this assessment.

The USPSTF recognizes that clinical decisions involve more considerations than evidence alone. Clinicians should understand the evidence but individualize decision making to the specific patient or situation. Similarly, the USPSTF notes that policy and coverage decisions involve considerations in addition to the evidence of clinical benefits and harms.

Summary of Recommendation and Evidence

Quiz Ref IDThe USPSTF recommends prophylactic ocular topical medication for all newborns to prevent gonococcal ophthalmia neonatorum (A recommendation) (Figure 1).

Rationale
Importance

In the United States, the rate of gonococcal ophthalmia neonatorum was an estimated 0.4 cases per 100 000 live births per year from 2013 to 2017.1-4Quiz Ref ID Gonococcal ophthalmia neonatorum can cause corneal scarring, ocular perforation, and blindness as early as 24 hours after birth.5-7 In the absence of ocular prophylaxis, transmission rates of gonococcal infection from mother to newborn are 30% to 50%.8

Reaffirmation

In 2011, the USPSTF reviewed the evidence on prophylactic ocular topical medication for all newborns to prevent gonococcal ophthalmia neonatorum and issued an A recommendation.5 The USPSTF has decided to use a reaffirmation deliberation process to update this recommendation. The USPSTF uses the reaffirmation process for well-established, evidence-based standards of practice in current primary care practice for which only a very high level of evidence would justify a change in the grade of the recommendation.9 In its deliberation of the evidence, the USPSTF considers whether the new evidence is of sufficient strength and quality to change its previous conclusions about the evidence.

Benefits of Preventive Medication

The USPSTF found convincing evidence that ocular prophylaxis of newborns with 0.5% erythromycin ophthalmic ointment can prevent gonococcal ophthalmia neonatorum.

Harms of Preventive Medication

The USPSTF found convincing evidence that ocular prophylaxis of newborns with 0.5% erythromycin ophthalmic ointment is not associated with serious harms.

USPSTF Assessment

Using a reaffirmation process,9 the USPSTF concludes with high certainty that the net benefit of topical ocular prophylaxis of all newborns to prevent gonococcal ophthalmia neonatorum is substantial.

Clinical Considerations
Patient Population Under Consideration

This recommendation applies to all newborns regardless of gestational age (Figure 2).

Preventive Medication

Erythromycin ophthalmic ointment is considered effective in preventing gonococcal ophthalmia neonatorum.10 Other medications, such as tetracycline ophthalmic ointment and silver nitrate, have been evaluated for the prevention of gonococcal ophthalmia neonatorum but are no longer available in the United States.3 Gentamicin was used during a period of erythromycin shortage, although its use was associated with ocular reactions (chemical conjunctivitis).11 Povidone-iodine has been proposed for prophylaxis, but there are limited data on its benefits and harms.3 Currently, erythromycin is the only drug approved by the US Food and Drug Administration for the prophylaxis of gonococcal ophthalmia neonatorum.11 Ocular prophylaxis of newborns is mandated in most states6 and is considered standard neonatal care.11

Additional Approaches to Prevention

The rates of gonococcal ophthalmia neonatorum are related to gonococcal infection rates in women of reproductive age.3 Accordingly, screening for and treatment of gonococcal infection in pregnant women is an important strategy for reducing the sexual transmission of gonorrhea and subsequent vertical transmission leading to gonococcal ophthalmia neonatorum. While screening and treatment programs have reduced the rates of gonorrhea in pregnant women, there are large disparities in access to prenatal care in the United States.1,12 Risk-based prophylaxis has also been proposed as an alternative strategy for preventing gonococcal ophthalmia neonatorum. Currently, there are no risk-based tools for screening pregnant women and no studies examining the use of risk-based vs universal prophylaxis. Therefore, ocular prophylaxis remains an important tool in the prevention of gonococcal ophthalmia neonatorum.

Useful Resources

The USPSTF recommends screening for gonorrhea in all sexually active women 24 years and younger and in older women at increased risk for infection, as well as pregnant women.13 The Centers for Disease Control and Prevention provides clinical guidance for ocular prophylaxis and treatment of gonococcal ophthalmia neonatorum.10

Other Considerations
Research Needs and Gaps

Quiz Ref IDThe only available drug approved by the US Food and Drug Administration for the prevention of gonococcal ophthalmia neonatorum is 0.5% erythromycin ophthalmic ointment. It is currently unknown whether Neisseria gonorrhoeae has developed resistance to erythromycin ointment in the United States. However, given increased antimicrobial resistance noted in other countries, further research is needed to find safe and effective alternatives to erythromycin. Another area for research is whether risk-based prophylaxis of newborns, based on maternal risk factors, is as effective as universal prophylaxis.

Discussion
Burden of Disease

Ophthalmia neonatorum is conjunctivitis occurring in infants during the first month of life. Gonococcal ophthalmia neonatorum occurs when gonococcal infection is transmitted to newborns during delivery by women infected with N gonorrhoeae.10 The rates of gonococcal conjunctivitis in infants are directly related to the rates of gonorrhea among women of reproductive age.3 In the United States, adolescents and young adult women have the highest rates of gonorrhea, with rates peaking at age 19 years (872.2 cases per 100 000 women); among women aged 20 to 24 years, there were 648.8 cases per 100 000 women in 2017.1 Estimated rates of gonorrhea among pregnant women in the US primary care setting are not available. Although gonococcal infection rates have declined since national screening programs were implemented in the 1970s, reported gonorrhea cases have increased recently, from 105.3 cases to 171.9 cases per 100 000 population from 2013 to 2017, respectively.1 An estimated 6.2% of births in the United States occur among women receiving little to no prenatal care, although rates as high as 20% have been documented in certain populations based on location and race/ethnicity.12

Data based on infant age (younger than 1 year) and specimen source (conjunctiva or eye) indicate there were an estimated 42 infections (≤0.4 cases) per 100 000 live births per year from 2013 to 2017.1 However, limitations in reporting suggest this is an underestimate.14 Using a broader definition that includes cases with unknown, other, or missing specimen sources, the prevalence of gonococcal ophthalmia neonatorum during that period could possibly be higher.3

Untreated gonococcal ophthalmia neonatorum can result in severe and lasting conditions, including corneal scarring, ocular perforation, and blindness.7 There are no contemporary estimates of blindness related to gonococcal ophthalmia neonatorum in the United States. Historical estimates from 19th-century Europe show that gonococcal ophthalmia neonatorum was a major cause of childhood blindness, resulting in corneal damage in 20% of infected infants and blindness in 3%.15,16 An observational study from Nairobi, Kenya, in the 1980s reported that 16% of a series of 64 infants with gonococcal ophthalmia neonatorum had corneal involvement.17

Scope of Review

To reaffirm its 2011 recommendation on ocular prophylaxis for gonococcal ophthalmia neonatorum,5 the USPSTF commissioned a targeted evidence review.3,4 The aim of this review was to identify substantial new evidence that was sufficient to change the prior recommendation.

Benefits of Preventive Medication

Quiz Ref IDPrevious USPSTF reviews found convincing evidence that topical ocular prophylaxis can prevent gonococcal ophthalmia neonatorum. The USPSTF found no new data that would change its previous conclusion that topical ocular prophylaxis is effective in preventing gonococcal ophthalmia neonatorum and related ocular conditions.

Potential Harms of Preventive Medication

The USPSTF found no new data that would change its previous conclusion that there is convincing evidence that topical ocular prophylaxis of all newborns is not associated with serious harms. Quiz Ref IDPossible harms include the potential for antimicrobial resistance to treatment medication.

Estimate of Magnitude of Net Benefit

The USPSTF considered the evidence using a reaffirmation process and found that topical ocular prophylaxis is effective in preventing gonococcal ophthalmia neonatorum and related ocular conditions, with small associated harms and substantial benefit. Therefore, the USPSTF reaffirms its previous conclusion that there is convincing evidence that topical ocular prophylaxis for all newborns provides substantial benefit.

Response to Public Comment

A draft version of this recommendation statement was posted for public comment on the USPSTF website from September 11 to October 9, 2018. Several comments questioned the continued need for universal prophylaxis given the relative low rate of disease. The USPSTF reaffirmed its recommendation based on several factors, including the rapid course and serious adverse effects of infection, increasing rates of gonococcal infection, and the large number of persons who do not receive screening for gonococcal infection during pregnancy in the United States. Comments also supported risk-based prophylaxis as an alternative strategy for prevention. However, there are no tools for assessing the risk of infection in newborns and no studies examining the use of risk-based vs universal prophylaxis. The USPSTF revised the recommendation to clarify this point. In addition, a number of comments promoted the use of iodine solutions (povidone-iodine) as an alternative to erythromycin ophthalmic ointment. The evidence review found limited studies on the use of iodine solutions and notes that they are not approved for use in the United States as ocular prophylaxis for gonococcal ophthalmia neonatorum. The USPSTF added language to address this concern.

Reaffirmation of Previous USPSTF Recommendation

This recommendation is a reaffirmation of the USPSTF 2011 recommendation statement.5 In 199618 and 2005,19 the USPSTF reviewed the evidence on ocular prophylaxis for gonococcal ophthalmia neonatorum and found that the benefits of screening substantially outweigh the harms. For the current recommendation, the USPSTF commissioned a targeted review to look for substantial new evidence on the benefits and harms of ocular prophylaxis and determined that the net benefit of ocular prophylaxis continues to be well established. The USPSTF found no new substantial evidence that could change its recommendation and therefore reaffirms its recommendation to provide prophylactic ocular topical medication for all newborns to prevent gonococcal ophthalmia neonatorum.

Recommendations of Others

The Centers for Disease Control and Prevention, American Academy of Pediatrics, American College of Obstetricians and Gynecologists, and the World Health Organization all recommend universal topical ocular prophylaxis to prevent gonococcal ophthalmia neonatorum.1,20,21 The Canadian Pediatric Society recommends against universal prophylaxis. Several European countries, including Denmark, Norway, Sweden, and the United Kingdom, no longer require universal prophylaxis, instead opting for a prevention strategy of increased screening and treatment of pregnant women.22 In 2017, the American Academy of Pediatrics and the American College of Obstetricians and Gynecologists recommended screening all pregnant women at risk for gonorrhea or who live in a high-prevalence area at the first prenatal visit; women with gonococcal infection should be retested in 3 to 6 months, preferably in the third trimester. In addition, if the result of the first test is negative but the woman is at high risk for gonorrhea, retesting at the beginning of the third trimester is recommended.20

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Article Information

Corresponding Author: Susan J. Curry, PhD, University of Iowa, 111 Jessup Hall, Iowa City, IA 52242 (chair@uspstf.net).

The US Preventive Services Task Force (USPSTF) members: Susan J. Curry, PhD; Alex H. Krist, MD, MPH; Douglas K. Owens, MD, MS; Michael J. Barry, MD; Aaron B. Caughey, MD, PhD; Karina W. Davidson, PhD, MASc; Chyke A. Doubeni, MD, MPH; John W. Epling Jr, MD, MSEd; Alex R. Kemper, MD, MPH, MS; Martha Kubik, PhD, RN; C. Seth Landefeld, MD; Carol M. Mangione, MD, MSPH; Michael Silverstein, MD, MPH; Melissa A. Simon, MD, MPH; Chien-Wen Tseng, MD, MPH, MSEE; John B. Wong, MD.

Affiliations of The US Preventive Services Task Force (USPSTF) members: University of Iowa, Iowa City (Curry); Fairfax Family Practice Residency, Fairfax, Virginia (Krist); Virginia Commonwealth University, Richmond (Krist); Veterans Affairs Palo Alto Health Care System, Palo Alto, California (Owens); Stanford University, Stanford, California (Owens); Harvard Medical School, Boston, Massachusetts (Barry); Oregon Health & Science University, Portland (Caughey); Columbia University, New York, New York (Davidson); University of Pennsylvania, Philadelphia (Doubeni); Virginia Tech Carilion School of Medicine, Roanoke (Epling); Nationwide Children’s Hospital, Columbus, Ohio (Kemper); Temple University, Philadelphia, Pennsylvania (Kubik); University of Alabama at Birmingham (Landefeld); University of California, Los Angeles (Mangione); Boston University, Boston, Massachusetts (Silverstein); Northwestern University, Evanston, Illinois (Simon); University of Hawaii, Honolulu (Tseng); Pacific Health Research and Education Institute, Honolulu, Hawaii (Tseng); Tufts University, Medford, Massachusetts (Wong).

Author Contributions: Dr Curry had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. The USPSTF members contributed equally to the recommendation statement.

Conflict of Interest Disclosures: Authors followed the policy regarding conflicts of interest described at https://www.uspreventiveservicestaskforce.org/Page/Name/conflict-of-interest-disclosures. All members of the USPSTF receive travel reimbursement and an honorarium for participating in USPSTF meetings.

Funding/Support: The USPSTF is an independent, voluntary body. The US Congress mandates that the Agency for Healthcare Research and Quality (AHRQ) support the operations of the USPSTF.

Role of the Funder/Sponsor: AHRQ staff assisted in the following: development and review of the research plan, commission of the systematic evidence review from an Evidence-based Practice Center, coordination of expert review and public comment of the draft evidence report and draft recommendation statement, and the writing and preparation of the final recommendation statement and its submission for publication. AHRQ staff had no role in the approval of the final recommendation statement or the decision to submit for publication.

Disclaimer: Recommendations made by the USPSTF are independent of the US government. They should not be construed as an official position of AHRQ or the US Department of Health and Human Services.

Additional Contributions: We thank Justin Mills, MD, MPH (AHRQ), who contributed to the writing of the manuscript, and Lisa Nicolella, MA (AHRQ), who assisted with coordination and editing.

References
1.
Centers for Disease Control and Prevention (CDC). Sexually transmitted disease surveillance 2017. CDC website. https://www.cdc.gov/std/stats17/default.htm. Updated October 15, 2018. Accessed December 3, 2018.
2.
Kreisel  K, Weston  E, Braxton  J, Llata  E, Torrone  E.  Keeping an eye on chlamydia and gonorrhea conjunctivitis in infants in the United States, 2010-2015.  Sex Transm Dis. 2017;44(6):356-358. doi:10.1097/OLQ.0000000000000613PubMedGoogle ScholarCrossref
3.
Guirguis-Blake  J, Evans  C, Rushkin  M.  Ocular Prophylaxis for Gonococcal Ophthalmia Neonatorum: A Reaffirmation Evidence Update for the US Preventive Service Task Force: Evidence Synthesis No. 173. Rockville, MD: Agency for Healthcare Research and Quality; 2018. AHRQ publication 18-05244-EF-1.
4.
Guirguis-Blake  JM, Evans  CV, Rushkin  M.  Ocular prophylaxis for gonococcal ophthalmia neonatorum: updated evidence report and systematic review for the US Preventive Services Task Force  [published January 29, 2018].  JAMA. doi:10.1001/jama.2018.17847Google Scholar
5.
US Preventive Services Task Force.  Ocular Prophylaxis for Gonococcal Ophthalmia Neonatorum: US Preventive Services Task Force Reaffirmation Recommendation Statement. Rockville, MD: Agency for Healthcare Research and Quality; 2011.
6.
Snowe  RJ, Wilfert  CM.  Epidemic reappearance of gonococcal ophthalmia neonatorum.  Pediatrics. 1973;51(1):110-114.PubMedGoogle Scholar
7.
Woods  CR.  Gonococcal infections in neonates and young children.  Semin Pediatr Infect Dis. 2005;16(4):258-270. doi:10.1053/j.spid.2005.06.006PubMedGoogle ScholarCrossref
8.
Laga  M, Meheus  A, Piot  P.  Epidemiology and control of gonococcal ophthalmia neonatorum.  Bull World Health Organ. 1989;67(5):471-477.PubMedGoogle Scholar
9.
US Preventive Services Task Force (USPSTF). US Preventive Services Task Force Procedure Manual. USPSTF website. https://www.uspreventiveservicestaskforce.org/Page/Name/procedure-manual. October 2018. Accessed December 3, 2018.
10.
Centers for Disease Control and Prevention (CDC). 2015 sexually transmitted diseases treatment guidelines. CDC website. https://www.cdc.gov/std/tg2015/default.htm. Updated January 25, 2017. Accessed December 3, 2018.
11.
Hammerschlag  MR.  Chlamydial and gonococcal infections in infants and children.  Clin Infect Dis. 2011;53(suppl 3):S99-S102. doi:10.1093/cid/cir699PubMedGoogle ScholarCrossref
12.
Martin  JA, Hamilton  BE, Osterman  MJK.  Births in the United States, 2016.  NCHS Data Brief. 2017;(287):1-8.PubMedGoogle Scholar
13.
LeFevre  ML; U.S. Preventive Services Task Force.  Screening for chlamydia and gonorrhea: U.S. Preventive Services Task Force recommendation statement.  Ann Intern Med. 2014;161(12):902-910. doi:10.7326/M14-1981PubMedGoogle ScholarCrossref
14.
Pilling  R, Long  V, Hobson  R, Schweiger  M.  Ophthalmia neonatorum: a vanishing disease or underreported notification?  Eye (Lond). 2009;23(9):1879-1880. doi:10.1038/eye.2008.364PubMedGoogle ScholarCrossref
15.
Schaller  UC, Klauss  V.  Is Credé’s prophylaxis for ophthalmia neonatorum still valid?  Bull World Health Organ. 2001;79(3):262-263.PubMedGoogle Scholar
16.
Stephenson  S.  Ophthalmia Neonatorum With Especial Reference to Its Causation and Prevention. London, United Kingdom: George Pulman, Ophthalmoscope Press; 1907.
17.
Fransen  L, Nsanze  H, Klauss  V,  et al.  Ophthalmia neonatorum in Nairobi, Kenya: the roles of Neisseria gonorrhoeae and Chlamydia trachomatis.  J Infect Dis. 1986;153(5):862-869. doi:10.1093/infdis/153.5.862PubMedGoogle ScholarCrossref
18.
US Preventive Services Task Force. Screening for gonorrhea—including ocular prophylaxis in newborns. In:  Guide to Clinical Preventive Services: Report of the U.S. Preventive Services Task Force. 2nd ed. Baltimore, MD: Williams & Wilkins; 1996.
19.
U.S. Preventive Services Task Force.  Screening for gonorrhea: recommendation statement.  Ann Fam Med. 2005;3(3):263-267. doi:10.1370/afm.337PubMedGoogle ScholarCrossref
20.
American Academy of Pediatrics, American College of Obstetricians and Gynecologists.  Guidelines for Perinatal Care. 8th ed. Elk Grove Village, IL: American Academy of Pediatrics; 2017.
21.
World Health Organization.  WHO Guidelines for the Treatment of Neisseria gonorrhoeae. Geneva, Switzerland: World Health Organization; 2016.
22.
Moore  DL, MacDonald  NE; Canadian Paediatric Society, Infectious Diseases and Immunization Committee.  Preventing ophthalmia neonatorum.  Paediatr Child Health. 2015;20(2):93-96.PubMedGoogle Scholar
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