PIP: In 1983, 8 (42%) of the 19 English-speaking Caribbean countries (including Suriname) achieved at least 50% coverage with 3 doses of diphtheria-pertussis-tetanus (DPT) vaccine among children under 1 year of age and 6 countries (32%) had at least 50% coverage with 3 doses of trivalent oral polio vaccine (TOPV). In addition, 10 countries (53%) achieved over 75% DPT coverage and 11 (58%) achieved over 75% TOPV coverage. Despite this record of progress, several factors continue to impede further gains in immunization coverage. Of particular concern is the high dropout rate. As many as 25% of infants receive their 1st dose of DPT and TOPV but do not return to complete their course of immunization. There is also a need for each health center to estimate its annual target population for immunization every year through analysis of the total live births from the previous year in the health center's catchment area (minus infant mortality). Monthly target figures can thus be computed and coverage monitored. A further problem has been a reluctance on the part of some health workers to administer vaccines simultaneously. This does not reduce effectiveness or increase the risk of complications, and reduces the number of visits needed to complete the immunization schedule. An unresolved question is whether to immunize ill or malnourished children. Decisions on this matter should take into account the availability and accessibility of health care services, the ability to follow-up children who are not immunized, and the likelihood that children will return for subsequent immunizations. Finally, a number of immunizations performed by private practitioners and institutions are not reported. Both public and private health care providers should agree on a standardized reporting format to allow better estimation of coverage.