Please select the eligibility criteria that correspond to the clinical trial below.
Title: Eliminating Trachoma With Repeat Mass Drug Treatment
Brief Summary: The WHO has initiated a program to eliminate trachoma, blinding eye infection caused by Chlamydia trachomatis, in large part by mass distributions of oral azithromycin. The proposed study will determine the frequency and treatment target of community-wide mass antibiotic treatment. We will also study the impact of mass antibiotic distribution on antibiotic-resistance in pneumococcus.


Options:
A: Inclusion Criteria:

• All residents residing in the state-teams which are randomly selected for this study.

Exclusion Criteria:

* Pregnant women
* Children under 6 months of age
* All those who are allergic to macrolides or azalides
* Refusal of village chief (for village inclusion), or refusal of parent or guardian (for individual inclusion)

Individuals in these three exclusion criteria will not be given the study antibiotic azithromycin, but offered the current WHO-recommended alternative treatment to azithromycin for active trachoma, which is 1% tetracycline eye ointment, to be used twice a day, topically to both eyes, for six weeks. Note that the exclusion criteria refer to the exclusion to the treatment drug, but not to the monitoring, treatment of trachoma, and examinations.
B: Inclusion Criteria:

Communities

* The community location in target district.
* The community leader consents to participation in the trial
* The community's estimated population is between 200-2,000 people.
* The community is not in an urban area.

Individuals - All children aged 1-60 months (up to but not including the 5th birthday), as assessed via biannual census.

Exclusion Criteria:

Individuals

- Refusal of village chief (for village inclusion), or refusal of parent or guardian (for individual inclusion)
C: Inclusion criteria for communities:

* Communities are located in the target districts and accessible by vehicle
* The community leaders consent to have the community enrolled
* Rapid assessment and/or available data suggest trachoma rates are higher than 20% in the community.
* The community size is \<5,000 persons or \>250 persons.

If a community meets the inclusion criteria and community leaders consent to have the community enrolled, then sentinel children will be selected based on the following criteria:

* The child is age 5 years or younger
* The child must be a resident in an eligible, sample community (defined as either living in the community since birth, or moved in with parents or guardians).
* The child must not have an ocular condition that would preclude grading trachoma or taking an ocular specimen.
* The child must be willing to have a swab taken as part of being a sentinel child (this is critical for The Gambia and Tanzania, as each swab result counts towards meeting the stopping rule)
* The child must have an identifiable guardian capable of providing consent to participate.
D: Inclusion Criteria:

* All residents residing in the state-teams which are randomly selected for this study.

Exclusion Criteria:

* Pregnant women
* Children under 6 months of age
* All those who are allergic to macrolides or azalides
* Refusal of village chief (for village inclusion), or refusal of parent or guardian (for individual inclusion)

Individuals in these three exclusion criteria will not be given the study antibiotic azithromycin, but offered the current WHO-recommended alternative treatment to azithromycin for active trachoma, which is 1% tetracycline eye ointment, to be used twice a day, topically to both eyes, for six weeks. Note that the exclusion criteria refer to the exclusion to the treatment drug, but not to the monitoring, treatment of trachoma, and examinations.

Answer: A