Please assess the completion status of the following clinical trial:

Trial Title: A Study in Healthy Adults to Evaluate the Safety and Immunogenicity of Different Doses of JNJ-63871860

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE2
- Number of Arms: 6.0

Eligibility Criteria:
Inclusion Criteria:~* Participant must be in stable health. Participants may have underlying illnesses such as hypertension, diabetes, ischemic heart disease, hyperlipoproteinemia, or hypothyroidism, as long as their symptoms/signs are medically controlled. If they are on medication for a condition, the medication dose must have been stable for at least 12 weeks preceding vaccination and is expected to remain stable for the duration of the study~* Participant must meet the protocol defined laboratory criteria within 12 days before Day 1~* Participant must be able to attend all scheduled visits and to comply with all study procedures~* Participant must have a body mass index (BMI) of less than or equal to (\<=) 35 kilogram per square meter (kg/m\^2)~* A woman of childbearing potential must have a negative urine pregnancy test on Day 1 before vaccination~Exclusion Criteria:~* Participant is a woman who is pregnant, breast-feeding, or has a positive urine pregnancy test on Day 1 before vaccination, or is planning to become pregnant 3 months after study vaccine administration or within 3 months after study vaccine administration, or subject is a man who plans to father a child while enrolled in this study or within 3 months after study vaccine administration~* Participant has an acute illness, acute infection, or fever (body temperature greater than or equal to \[\>=\] 38 degree Celsius)~* Participant has a serious chronic disorder, including severe chronic obstructive pulmonary disease or clinically significant congestive heart failure, requirement for supplemental oxygen, end stage renal disease with or without dialysis, clinically unstable cardiac disease, or has any condition for which, in the opinion of the investigator, participation would not be in the best interest of the subject (example compromise the well-being) or that could prevent, limit, or confound the protocol-specified assessments~* Participant has a history of neoplastic disease (excluding non-melanoma skin cancer that was successfully treated) within the past 5 years or a history of any hematological malignancy~* Participant has known or suspected congenital or acquired immunodeficiency (including leukemia, HIV seropositivity), has received immunosuppressive therapy (such as anti-cancer chemotherapy, radiation therapy or cytotoxic drugs), within the preceding 6 months; or long-term systemic corticosteroid therapy \[prednisone or equivalent for more than 2 consecutive weeks within the past 3 months\]), or has chronic active hepatitis B or hepatitis C infection, documented by hepatitis B surface antigen and hepatitis C antibody, respectively

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- ExPEC4V (4 : 4 : 4 : 4) (Type: EXPERIMENTAL): Participants will be stratified according to their age in 2 groups \>=18 to \<50 years and \>=50 years. Part 1: In age group \>= 18 to \<50 years, participants will receive single vaccination of ExPEC4V dose (4 : 4 : 4 : 4) as an intramuscular (i.m) injection into deltoid muscle. The ExPEC4V doses contain polysaccharide antigen (in microgram \[mcg\]) from the ExPEC serotypes O1A, O2, O6A, and O25B. Participants in \>=50 years group will be enrolled in stepwise,dose-escalating procedure. In step 1, lowest dose of ExPEC4V (4:4:4:4) or Placebo will be given, in step 2 either of 2 medium doses of ExPEC4V or placebo and in step 3, either of 2 highest doses of ExPEC4V or placebo. Participants will be enrolled into subsequent steps only if vaccination in previous steps is deemed safe based on review of safety data by the IDMC. Participants will be enrolled into Part 2 only if vaccination in Part 1 is deemed safe based on the review of safety data through Day 8 by the IDMC.
- ExPEC4V (4 : 4 : 4 : 8) (Type: EXPERIMENTAL): Participants will be stratified according to their age in 2 groups \>=18 to \<50 years and \>=50 years. Part 1: In age group \>= 18 to \<50 years, participants will receive single vaccination of ExPEC4V dose (4 : 4 : 4 : 8) as an i.m injection into deltoid muscle. The ExPEC4V doses contain polysaccharide antigen (in mcg) from the ExPEC serotypes O1A, O2, O6A, and O25B. Participants in \>=50 years group will be enrolled in stepwise,dose-escalating procedure. In step 1, lowest dose of ExPEC4V or Placebo will be given, in step 2 either of 2 medium doses (4 : 4 : 4 : 8/8 : 8 : 8 : 8) of ExPEC4V or placebo and in step 3, either of 2 highest doses of ExPEC4V or placebo. Participants will be enrolled into subsequent steps only if vaccination in previous steps is deemed safe based on review of safety data by the IDMC. Participants will be enrolled into Part 2 only if vaccination in Part 1 is deemed safe based on the review of safety data through Day 8 by the IDMC.
- ExPEC4V (8 : 8 : 8 : 8) (Type: EXPERIMENTAL): Participants will be stratified according to their age in 2 groups \>=18 to \<50 years and \>=50 years. Part 1: In age group \>= 18 to \<50 years, participants will receive single vaccination of ExPEC4V dose (8 : 8 : 8 : 8) as an i.m injection into deltoid muscle. The ExPEC4V doses contain polysaccharide antigen (in mcg) from the ExPEC serotypes O1A, O2, O6A, and O25B. Participants in \>=50 years group will be enrolled in stepwise,dose-escalating procedure. In step 1, lowest dose of ExPEC4V or Placebo will be given, in step 2 either of 2 medium doses (4 : 4 : 4 : 8/8 : 8 : 8 : 8) of ExPEC4V or placebo and in step 3, either of 2 highest doses of ExPEC4V or placebo. Participants will be enrolled into subsequent steps only if vaccination in previous steps is deemed safe based on review of safety data by the IDMC. Participants will be enrolled into Part 2 only if vaccination in Part 1 is deemed safe based on the review of safety data through Day 8 by the IDMC.
- ExPEC4V (8 : 8 : 8 : 16) (Type: EXPERIMENTAL): Participants will be stratified according to their age in 2 groups \>=18 to \<50 years and \>=50 years. Part 1: In age group \>= 18 to \<50 years, participants will receive single vaccination of ExPEC4V dose (8 : 8 : 8 : 16) as an i.m injection into deltoid muscle. The ExPEC4V doses contain polysaccharide antigen (in mcg) from the ExPEC serotypes O1A, O2, O6A, and O25B. Participants in \>=50 years group will be enrolled in stepwise,dose-escalating procedure. In step 1, lowest dose of ExPEC4V or Placebo will be given, in step 2 either of 2 medium doses of ExPEC4V or placebo and in step 3, either of 2 highest doses (8 : 8 : 8 : 16/16 : 16 : 16 : 16) of ExPEC4V or placebo. Participants will be enrolled into subsequent steps only if vaccination in previous steps is deemed safe based on review of safety data by the IDMC. Participants will be enrolled into Part 2 only if vaccination in Part 1 is deemed safe based on the review of safety data through Day 8 by the IDMC.
- ExPEC4V (16 : 16 : 16 : 16) (Type: EXPERIMENTAL): Participants will be stratified according to their age in 2 groups \>=18 to \<50 years and \>=50 years. Part 1: In age group \>= 18 to \<50 years, participants will receive single vaccination of ExPEC4V dose (16 : 16 : 16 : 16) as an i.m injection into deltoid muscle. The ExPEC4V doses contain polysaccharide antigen (in mcg) from the ExPEC serotypes O1A, O2, O6A, and O25B. Participants in \>=50 years group will be enrolled in stepwise,dose-escalating procedure. In step 1, lowest dose of ExPEC4V or Placebo will be given, in step 2 either of 2 medium doses of ExPEC4V or placebo and in step 3, either of 2 highest doses (8 : 8 : 8 : 16/16 : 16 : 16 : 16) of ExPEC4V or placebo. Participants will be enrolled into subsequent steps only if vaccination in previous steps is deemed safe based on review of safety data by the IDMC. Participants will be enrolled into Part 2 only if vaccination in Part 1 is deemed safe based on the review of safety data through Day 8 by the IDMC.
- Placebo (Type: PLACEBO_COMPARATOR): Participants will be stratified according to their age in 2 groups \>= 18 to \<50 years and \>=50 years. Part 1: Participants will receive matching placebo to ExPEC4V as an intramuscular injection into the deltoid muscle. Participants will be enrolled into Part 2 only if vaccination in Part 1 is deemed safe and well tolerated based on the review of safety data through Day 8 by the IDMC.

Based on this trial design, predict the completion outcome and termination type (if applicable).

Answer: outcome: complete